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Ultramarathons in October

The 458 ultramarathons that run in October, with distance, climb and cutoff for each. Every race links to its own page, where you can see how it fits the runner you are now.

RaceDistanceWhereDateClimbCutoff
UTLMonteux Ultra Tour du Lac de Monteux Backyard UltraBackyard (4.167-mile yards)Monteux, FranceOct 1, 2026——
Chihuahua by UTMBRarámuri 100MBarrancas del Cobre, MexicoOct 1, 202618,373 ft30 h
Chihuahua by UTMB155kmBarrancas del Cobre, MexicoOct 1, 202626,247 ft42 h
Chihuahua by UTMB56kmBarrancas del Cobre, MexicoOct 1, 20268,530 ft12 h
Chihuahua by UTMB92kmBarrancas del Cobre, MexicoOct 1, 202614,436 ft22 h
NJ Trail Series One Day50 KMAugusta, NJOct 1, 2026—13.5 h
DC Peaks 100100 MileSalt Lake City, UTOct 2, 202620,869 ft36 h
Vaarojen Ultramaraton131kmKoli, FinlandOct 2, 202612,467 ft30 h
Vaarojen Ultramaraton65kmKoli, FinlandOct 2, 20266,234 ft17 h
Backyard Infinity Trail Île d'AixBackyard (4.167-mile yards)Ile d'Aix, FranceOct 2, 2026——
Frio Trio Endurance Festival50 KMLeakey, TXOct 2, 20262,000 ft10 h
TransJeju by UTMB - Jeju100M104 kmJeju, South KoreaOct 2, 202613,189 ft29 h
TransJeju by UTMB - Jeju100M107kmJeju, South KoreaOct 2, 202613,950 ft29 h
TransJeju by UTMB - Jeju100M150kmJeju, South KoreaOct 2, 202616,404 ft37 h
TransJeju by UTMB - Jeju100MJeju60KJeju, South KoreaOct 2, 20264,593 ft15 h
THE MAMMOTH 200200 MilesMammoth Lakes, CAOct 2, 202632,000 ft110 h
Above the Clouds Ultra50 KMWoodland Park, COOct 3, 20264,137 ft11 h
Angeles Crest 100 Mile100 MilesWrightwood, CAOct 3, 202619,869 ft33 h
Arkansas Traveller 100100 MilesPerryville, AROct 3, 202612,000 ft30 h
Garden City Backyard UltraBackyard (4.167-mile yards)Toowoomba, AustraliaOct 3, 2026——
Baker Lake 50k50 KMBaker Lake, WAOct 3, 20263,400 ft10.5 h
Barkcamp Race40 MilesBelmont, OHOct 3, 2026——
The Bear Chase 100K100KLakewood, COOct 3, 20264,336 ft16 h
The Bear Chase 50K50KLakewood, COOct 3, 20262,036 ft14 h
The Bear Chase 50 Mile50 MileLakewood, COOct 3, 20263,470 ft15 h
Black Barn Backyard UltraBackyard (4.167-mile yards)Bonney Lake, WAOct 3, 2026——
Buck 5050 KMKattskill bay, NYOct 3, 20269,000 ft12 h
Relentless at the Ark Trail Race80 kmDenholm, CanadaOct 3, 20265,584 ft16 h
UpRiver Running Fall Races50kmThunder Bay, CanadaOct 3, 20262,854 ft9 h
Castle Rock Trail Festival50 KMCastle Rock, COOct 3, 20263,223 ft8 h
CT Donut Run31.5 miWallingford, CTOct 3, 2026——
Cuyamaca 100 km Endurance Run100 KMJulian, CAOct 3, 20269,000 ft19 h
Dana Peak Trail Run50 KMHarker Heights, TXOct 3, 20263,354 ft13 h
Dana Peak Trail Run100 KMHarker Heights, TXOct 3, 20266,700 ft24 h
DC Peaks 50 Mile50 MileKaysville, UTOct 3, 202611,700 ft17 h
DC Peaks 55K55KNorth Salt Lake, UTOct 3, 20267,800 ft14 h
El Diablo Hundo100 MilesDoyline, LAOct 3, 2026—40 h
El Diablo Hundo100 KMDoyline, LAOct 3, 2026—34 h
Backyard Ultra Curillas – El Ultimo ArrieroBackyard (4.167-mile yards)Curillas, SpainOct 3, 2026——
Salomon Ultra Pirineu100 kmBaga, SpainOct 3, 202621,526 ft26.5 h
Export 100 Trail Race100 MilesExport, PAOct 3, 20267,372 ft32 h
Fire Tower 50 km Trail Race50 KMHinckley, MNOct 3, 2026900 ft17 h
Fire Tower Trail Race100 KMHinckley, MNOct 3, 20261,800 ft19 h
Beaver Trail51kmPoulx, FranceOct 3, 20266,234 ft9 h
Beaver Trail80 kmPoulx, FranceOct 3, 20268,858 ft14 h
Freed to Run Challenge50 KMJacksonville, FLOct 3, 2026—9 h
Dark Downs161 kmPlumpton, United KingdomOct 3, 202611,942 ft34 h
Dark Downs50kmPlumpton, United KingdomOct 3, 20264,400 ft12 h
Epping Forest 50 km50kmWanstead Flats, United KingdomOct 3, 2026397 ft9 h
Grand Valley BackyardBackyard (4.167-mile yards)Loma, COOct 3, 2026500 ft—
Ultrabalaton Trail115kmCsopak, HungaryOct 3, 20269,557 ft21 h
John Holmes 50k Trail Run50 KMBrooksville, FLOct 3, 2026—8 h
Lastest Not FastestBackyard (4.167-mile yards)North Bonneville, WAOct 3, 2026——
Legends Never Die55 KMKetchum, IDOct 3, 20267,000 ft10 h
Little Dog’s Backyard UltraBackyard (4.167-mile yards)Bell Buckle, TNOct 3, 2026450 ft—
Perpetua Coast (Oregon Coast)50 KMYachats, OROct 3, 20265,700 ft9 h
Pisgah 55.5K Running Race55.5 KMPisgah Forest, NCOct 3, 2026—12 h
Quantico 24-Hour Walk/Run for Charity100 MilesQuantico, VAOct 3, 2026—30 h
Quantico 24-Hour Walk/Run for Charity50 KMQuantico, VAOct 3, 2026—9 h
Quantico 24-Hour Walk/Run for Charity50 MilesQuantico, VAOct 3, 2026—13.5 h
Quantico 24-Hour Walk/Run for Charity100 KMQuantico, VAOct 3, 2026—19 h
Robin Ames Foundation Trail Races50 KMBruceton Mills, WVOct 3, 20263,435 ft10.5 h
Saddles 100100 MilesPrescott, AZOct 3, 202612,867 ft34 h
Saddles 10050 MilesPrescott, AZOct 3, 20266,100 ft14 h
Sage Burner 50K50KGunnison, COOct 3, 20264,500 ft11 h
Shawnee 50 km Trail Run50 KMWest Portsmouth, OHOct 3, 20266,500 ft10.5 h
Shawnee Trail Run50 MilesWest Portsmouth, OHOct 3, 202611,000 ft17 h
Signal Peak Trail Runs50 KMEmigrant Gap, CAOct 3, 2026—9 h
Summit Survivor Backyard Ultra RaceBackyard (4.167-mile yards)Glenwood, NYOct 3, 2026——
Swiss Valley 50 km Trail Race50 KMPeosta, IAOct 3, 20265,250 ft10.5 h
Tale of Two Trails40 MilesShawnee, KSOct 3, 20262,600 ft16.25 h
Tale of Two Trails50 MilesShawnee, KSOct 3, 20263,000 ft15.5 h
The Bull Mountain Epic50 KMDahlonega, GAOct 3, 20265,000 ft12 h
The Hennepin Hundred - Run100 MilesSterling, ILOct 3, 20262,000 ft30 h
The Hennepin Hundred - 50 km Run50 KMSterling, ILOct 3, 2026—20 h
The Hennepin Hundred - Run50 MilesSterling, ILOct 3, 2026—15 h
The Midnight Dreary100 MilesMount Pleasant, SCOct 3, 2026—30 h
The Midnight Dreary50 KMMount Pleasant, SCOct 3, 2026—9 h
The Midnight Dreary50 MilesMount Pleasant, SCOct 3, 2026—13.5 h
The Midnight Dreary100 KMMount Pleasant, SCOct 3, 2026—19 h
The Naturalist50 KMFranklin, NCOct 3, 20268,500 ft9.5 h
Tryon Farm 50k50 KMMichigan City, INOct 3, 2026—8 h
WC-50 Ultra Trail Marathon50 KMCharlotte, NCOct 3, 2026—10.5 h
WC-50 Ultra Trail Marathon50 MilesCharlotte, NCOct 3, 2026—13 h
Whitefish Trail Blazer50 KMWhitefish, MTOct 3, 20266,300 ft10 h
Yankee Springs Fall Trail Run Festival50 KMMiddleville, MIOct 3, 2026—9 h
Black Forest 100k Ultra Race100 KMNorth Bend, PAOct 4, 202613,400 ft19 h
Blues Cruise50 KMReading, PAOct 4, 2026240 ft9 h
Heritage 50K and Half-Marathon50 KMAdrian, MIOct 4, 2026—8 h
Elba Legend Run 60km65kmCapoliveri (LI), ItalyOct 4, 20269,843 ft14 h
Trainic world Ogose-Tokigawa Trail Run 50km51.4kmOgose, JapanOct 4, 20264,593 ft11 h
Kettle Cooker Five and Dime50 KMNottingham, PAOct 4, 2026—9 h
Moscow Mountain Madness50 KMMoscow, IDOct 4, 20265,500 ft10 h
Spooner's Cove50 KMLos Osos, CAOct 4, 2026——
Yuba Gold50 KMNevada City, CAOct 4, 20265,669 ft—
Pfälzer Weinsteig UTPW 170173kmSchweigen-Rechtenbach, GermanyOct 9, 202620,013 ft39 h
Heartland Race100 MilesCassoday, KSOct 9, 20266,000 ft30 h
Heartland Race125 MilesCassoday, KSOct 9, 2026—38 h
Heartland Race50 KMCassoday, KSOct 9, 2026—9 h
Heartland 50 Mile Race50 MilesCassoday, KSOct 9, 2026—15 h
Heartland 50 Mile Race100 KMCassoday, KSOct 9, 2026—30 h
Indiana Trail 100150 MilesAlbion, INOct 9, 20269,000 ft54 h
Indiana Trail100 MilesAlbion, INOct 9, 20266,000 ft30 h
Indiana Trail 50 Mile50 MilesAlbion, INOct 9, 20263,000 ft15 h
Indiana Trail75 MilesAlbion, INOct 9, 2026—23 h
Kodiak Ultra Marathons100 MilesBig Bear Lake, CAOct 9, 202615,912 ft36 h
Moab 240 Endurance Run240 MilesMoab, UTOct 9, 202631,892 ft112 h
Point to Point NJ200 MilesSussex, NJOct 9, 2026—86.5 h
Point to Point NJ50 KMSussex, NJOct 9, 2026—12 h
Tesla Hertz Run150 MilesRocky Point, NYOct 9, 2026—54.5 h
The Biggest Little Ultra100 MilesSparks, NVOct 9, 20261,508 ft48 h
The Biggest Little Ultra50 MilesSparks, NVOct 9, 2026754 ft26 h
The Yeti 100 Mile Endurance Run100 MilesWhitetop, VAOct 9, 20266,220 ft30 h
Virginia Trail Running Festival100 MilesMax Meadows, VAOct 9, 20262,000 ft33 h
Virginia Trail Running Festival50 MilesFries, VAOct 9, 20262,000 ft16 h
West Virginia Trilogy50 KMCircleville, WVOct 9, 2026—10.5 h
Angel's Rest50 KMCascade Locks, OROct 10, 20266,500 ft10.5 h
Antelope Island Fall Classic 50K50KSyracuse, UTOct 10, 20263,038 ft16 h
75 KM UTACCH - Ultra Trail Amanecer Comechingón100kmVilla Yacanto de Calamuchita, ArgentinaOct 10, 202613,714 ft30 h
75 KM UTACCH - Ultra Trail Amanecer Comechingón160kmVilla Yacanto de Calamuchita, ArgentinaOct 10, 202616,798 ft36 h
75 KM UTACCH - Ultra Trail Amanecer Comechingón55kmVilla Yacanto de Calamuchita, ArgentinaOct 10, 20268,530 ft16 h
75 KM UTACCH - Ultra Trail Amanecer Comechingón75kmVilla Yacanto de Calamuchita, ArgentinaOct 10, 202611,155 ft21 h
Hume & Hovell100kmTumbarumba, AustraliaOct 10, 20268,202 ft32 h
Big Bastrop Backyard UltraBackyard (4.167-mile yards)Bastrop, TXOct 10, 2026——
Blue Ridge Ultra50 KMBlue Ridge, GAOct 10, 2026—10 h
X-Treme Run Gramado55kmGramado, BrazilOct 10, 20267,874 ft11.5 h
Break the Bank50 MilesDuluth, MNOct 10, 2026—12.5 h
Broken Rock Trail Runs50 KMDodgeville, WIOct 10, 20263,300 ft9 h
Can Lake 50 Ultras50 KMCanandaigua, NYOct 10, 2026—9.5 h
Can Lake 50 Ultras50 MilesCanandaigua, NYOct 10, 20263,659 ft12 h
Canal Corridor 100 Mile Endurance Run100 MilesAkron, OHOct 10, 20262,000 ft32 h
Canyon De Chelly Ultra55 KMChinle, AZOct 10, 20261,581 ft11 h
Caveman Challenge at Waterloo Lake50 KMDenison, TXOct 10, 2026—9.5 h
Chasing the Sun Endurance Run50 KMBradenton, FLOct 10, 2026—9 h
DieSPECKer LaufSPECKtakel51kmDiespeck, GermanyOct 10, 20262,625 ft10 h
DieSPECKer LaufSPECKtakel72kmDiespeck, GermanyOct 10, 20263,937 ft10 h
UTPW Tiny Trail70kmNeustadt/Weinstrasse, GermanyOct 10, 20266,890 ft16 h
Defiance 50K50 KMTacoma, WAOct 10, 20263,918 ft8 h
Des Plaines River 50 km Trail Race50 KMLibertyville, ILOct 10, 2026—11.5 h
Des Plaines River Trail Race50 MilesLibertyville, ILOct 10, 20261,350 ft11.5 h
Duff Dog Backyard UltraBackyard (4.167-mile yards)Luverne, MNOct 10, 2026350 ft—
Euchre Bar Massacre50 MilesForesthill, CAOct 10, 202620,000 ft19 h
Farmdale Trail Run100 MilesEast Peoria, ILOct 10, 20266,188 ft32 h
Farmdale Trail Run50 MilesEast Peoria, ILOct 10, 2026—22 h
Nummela Backyard UltraBackyard (4.167-mile yards)Nummela, FinlandOct 10, 2026——
Flagstaff Loop Trail 45 Miler45 MilesFlagstaff, AZOct 10, 20263,300 ft14.5 h
Grand Raid de Camargue100 kmSalin-de-Giraud, FranceOct 10, 2026328 ft16 h
Grand Raid de Camargue60 kmSalin-de-Giraud, FranceOct 10, 2026164 ft10 h
Grand Raid de Camargue66kmSalin-de-Giraud, FranceOct 10, 2026131 ft12 h
William Wallace Ultra72kmStirling, United KingdomOct 10, 20264,154 ft14 h
Hainesport Endurance Run100 MilesHainesport, NJOct 10, 2026—30 h
Kettlebell Kountdown50 KMPelham, ALOct 10, 2026—12 h
Kodiak Ultra Marathons50 KMBig Bear Lake, CAOct 10, 20266,000 ft11 h
Kodiak Ultra Marathons100 KMBig Bear Lake, CAOct 10, 202610,000 ft20 h
Lake Yahou 50k50 KMAnniston, ALOct 10, 20263,000 ft10 h
Le Grizz50 MilesPolebridge, MTOct 10, 20262,600 ft17 h
Lion King Backyard UltraBackyard (4.167-mile yards)Rolla, MOOct 10, 2026140 ft—
Long Hunter Trail Runs50 KMHermitage, TNOct 10, 20261,100 ft8 h
Mad Meadows50 KMLeavenworth, WAOct 10, 20267,000 ft13.5 h
Mad Meadows50 MilesLeavenworth, WAOct 10, 202611,000 ft—
Middle Fork Trail Run50 KMNorth Bend, WAOct 10, 20264,090 ft10 h
Midstate Massive Ultra Trail100 MilesNew Ipswich, NHOct 10, 202612,050 ft32 h
Midstate Massive 30 Mile Ultra Trail30 MilesNew Ipswich, NHOct 10, 20263,280 ft10 h
Midstate Massive Ultra Trail50 MilesNew Ipswich, NHOct 10, 20266,561 ft17.5 h
Mt. Umunhum Trail Conquest - Fall50 KMSan Jose, CAOct 10, 20266,350 ft9 h
MuleSkinner Endurance 50 km Race50 KMUpper Black Eddy, PAOct 10, 2026—8 h
MuleSkinner Endurance Race50 MilesUpper Black Eddy, PAOct 10, 2026—14 h
Newtown Backyard UltraBackyard (4.167-mile yards)St Charles, MOOct 10, 202625 ft—
Oil Creek Trail Run100 MilesTitusville, PAOct 10, 202617,627 ft32 h
Oil Creek 50 km Trail Run50 KMTitusville, PAOct 10, 20265,459 ft17 h
Oil Creek Trail Run100 KMTitusville, PAOct 10, 202611,026 ft31 h
Oklahoma City Trail Running Festival50 KMOklahoma City, OKOct 10, 2026—9 h
Rainbow Ridge 20k/50k50 KMRainbow, OROct 10, 20268,000 ft11.5 h
Rockland Lake 30/50K50 KMValley Cottage, NYOct 10, 2026—9 h
Ruth Anderson50 KMSan Francisco, CAOct 10, 2026—11 h
Ruth Anderson50 MilesSan Francisco, CAOct 10, 2026—13 h
Sasquatch Shuffle50 KMMcCall, IDOct 10, 2026—10 h
Sunset & Cider Trail Races50 KMAuburn, CAOct 10, 20264,040 ft9 h
Switchback Sorrows 50K50 KMSpokane, WAOct 10, 20263,100 ft10 h
Tesla Hertz Run100 MilesRocky Point, NYOct 10, 20262,700 ft54 h
Tesla Hertz Run50 KMRocky Point, NYOct 10, 2026—14 h
Tesla Hertz Run50 MilesRocky Point, NYOct 10, 2026—14.5 h
Tesla Hertz Run100 KMRocky Point, NYOct 10, 2026—23.5 h
That's No Moon Ultras 50K50 KMSilverado, CAOct 10, 20265,469 ft14.75 h
That's No Moon Ultras50 MilesSilverado, CAOct 10, 20269,440 ft16.75 h
The Devils Race Track BackyardBackyard (4.167-mile yards)Huntsville, ALOct 10, 2026——
The Last Wolf 50K50 KMKings Mountain, NCOct 10, 20268,660 ft13.5 h
The Mammoth at High Hope Ranch50 KMGlen Rose, TXOct 10, 2026—15 h
The Mammoth at High Hope Ranch100 KMGlen Rose, TXOct 10, 2026—26 h
The Next Loop: Endurance Series, Shreveport LA Oct50 KMKeithville, LAOct 10, 2026—11 h
Trailway Trail Race50 KMHouston, TXOct 10, 2026—9 h
Urban Wilderness 50k50 KMKnoxville, TNOct 10, 20264,000 ft10 h
West Virginia Trilogy50 MilesCircleville, WVOct 10, 2026—14.5 h
Wolverine State 100100 MilesPetoskey, MIOct 10, 2026—33 h
Wolverine State 10050 KMPetoskey, MIOct 10, 2026—10 h
Wolverine State 100100 KMPetoskey, MIOct 10, 2026—28.5 h
Bizz Johnson50 KMSusanville, CAOct 11, 2026280 ft8 h
Trail Vallée de Joux 51km58kmL'Abbaye, SwitzerlandOct 11, 20269,744 ft9 h
Free State Trail 40 Miles Run40 MilesLawrence, KSOct 11, 20264,512 ft28 h
Lisi Trail Festival63 kmTbilisi, GeorgiaOct 11, 20268,842 ft13 h
Glacial Trail 5050 KMGreenbush, WIOct 11, 2026—12.5 h
Glacial Trail 5050 MilesGreenbush, WIOct 11, 2026—12 h
Green Monster Trail Challenge50 KMWellsboro, PAOct 11, 20267,800 ft11 h
Hasetsune Cup - Japan Mountain Endurance Race64 kmAkiruno, JapanOct 11, 202613,471 ft23.98 h
Hasetsune Cup - Japan Mountain Endurance Race71.5kmAkiruno, JapanOct 11, 202615,853 ft24 h
Rocky Gap 50k50 KMFlintstone, MDOct 11, 20262,600 ft10 h
Grand Raid Réunion - La Diagonale des Fous106 kmSaint-Pierre, FranceOct 15, 202620,512 ft42 h
Grand Raid Réunion - La Diagonale des Fous175kmSaint-Pierre, FranceOct 15, 202633,465 ft66 h
Grand Raid Réunion - La Diagonale des Fous54 kmSaint-Pierre, FranceOct 15, 20268,707 ft14 h
Grand Raid Réunion - La Diagonale des Fous74 kmSaint-Pierre, FranceOct 15, 202612,572 ft21 h
Ultra-Trail Mount Yun by UTMBUMY 100MHukou Waterfall, ChinaOct 16, 202624,278 ft48 h
Ultra-Trail Mount Yun by UTMB97 kmHukou Waterfall, ChinaOct 16, 202614,311 ft28 h
Grand Raid Réunion - La Mascareignes70kmHell-Bourg, FranceOct 16, 202612,467 ft21 h
Grand Raid Réunion - Trail de Bourbon100kmCilaos, FranceOct 16, 202620,341 ft42 h
Mines of Spain Race100 MilesDubuque, IAOct 16, 202614,000 ft33 h
Mines of Spain 100 km Race100 KMDubuque, IAOct 16, 20268,400 ft23 h
Pony Express Trail 100 Mile100 MileVernon, UTOct 16, 2026—30 h
Pony Express Trail 50 Mile50 MileVernon, UTOct 16, 20263,000 ft19.5 h
The Blackall 100100kmMapleton, AustraliaOct 17, 20269,514 ft28 h
The Blackall 10050kmMapleton, AustraliaOct 17, 20265,728 ft23 h
BALS BackyardBackyard (4.167-mile yards)Rock Hill, SCOct 17, 2026——
Big Dog's Backyard UltraBackyard (4.167-mile yards)Bell Buckle, TNOct 17, 2026475 ft—
Big Tex BackyardBackyard (4.167-mile yards)Cat Spring, TXOct 17, 202610 ft—
Black River Trail Classic 50 km50 KMMillston, WIOct 17, 2026—10 h
Black River Trail Classic85 KMMillston, WIOct 17, 2026—12 h
Bobcat Trail Race 50k50 KMColorado Springs, COOct 17, 20263,838 ft10 h
Bromont Ultra 160 km Trail Run160kmBromont, CanadaOct 17, 202613,123 ft32 h
Bromont Ultra 160 km Trail Run55kmBromont, CanadaOct 17, 20264,593 ft9 h
Bromont Ultra 160 km Trail Run80kmBromont, CanadaOct 17, 20266,562 ft13 h
Cactus to Cloud Sky Race50 KMCloudcroft, NMOct 17, 2026—12.5 h
Cahuilla Rez Ultra100 MilesAnza, CAOct 17, 20268,500 ft29 h
California Fall Classic and 55K55 KMHealdsburg, CAOct 17, 20267,060 ft16.5 h
California Fall Classic 100K and100 KMHealdsburg, CAOct 17, 202613,848 ft19 h
Cave Creek Thriller 50K Race50 KMCave Creek, AZOct 17, 20262,810 ft9.5 h
Backyard Ultra Valais (BUV)Backyard (4.167-mile yards)Ardon, SwitzerlandOct 17, 2026——
Cotton Pickin 50K50 KMMercer, TNOct 17, 2026—8 h
Death by 5k Tyler50 KMTyler, TXOct 17, 2026—18.5 h
Elk-Kings Trail Races50 KMTillamook, OROct 17, 20266,000 ft9.5 h
Endless Day Backyard Ultra100 MilesRichfield, UTOct 17, 2026—24 h
Flatrock Georgia50 KMDacula, GAOct 17, 20262,644 ft9 h
Salomon EcoTrail Paris - Automne52 kmIle de Loisirs de Cergy, FranceOct 17, 20262,625 ft9 h
Salomon EcoTrail Paris - Automne78 kmIle de Loisirs de Cergy, FranceOct 17, 20263,488 ft12.5 h
Ghost Train Trail Races100 MilesBrookline, NHOct 17, 20263,202 ft30 h
Gila 100100 MilesSilver City, NMOct 17, 202613,181 ft36 h
Gila 10050 MilesSilver City, NMOct 17, 20267,560 ft20 h
HKY 100 Mile Ultra Trail Race100 MilesHickory, NCOct 17, 202615,500 ft30 h
Hootenanny Endurance Run BackyardBackyard (4.167-mile yards)Gregory, MIOct 17, 2026——
Horseshoe Bend Ultras55 KMPage, AZOct 17, 20261,942 ft14.5 h
Horseshoe Bend Ultras50 MilesPage, AZOct 17, 20262,808 ft16 h
Indian Creek Fifties 50 Mile50 MileSedalia, COOct 17, 202610,122 ft14 h
Indian Creek Fifties 55K55KSedalia, COOct 17, 20267,185 ft14 h
Inks Lake Trail Run/Ruck50 KMBurnet, TXOct 17, 2026—5 h
Ultra Trail Lago d'Orta (UTLO)100kmOmegna, ItalyOct 17, 202618,799 ft26 h
Ultra Trail Lago d'Orta (UTLO)54kmOmegna, ItalyOct 17, 202611,985 ft15 h
Jordan River Blitz BackyardBackyard (4.167-mile yards)South Jordan, UTOct 17, 2026——
Dtrail Race50kmDaejeon, South KoreaOct 17, 20268,727 ft13 h
Lake Hodges Trail Fest 50K50 KMEscondido, CAOct 17, 20263,449 ft8.5 h
Larch Madness50 KMTwisp, WAOct 17, 202618,200 ft18 h
Love Never Ends Trail Run50 KMAtoka, OKOct 17, 20261,400 ft10.5 h
Love Never Ends Trail Run50 MilesAtoka, OKOct 17, 20262,300 ft15 h
Love Never Ends Trail Run100 KMAtoka, OKOct 17, 20262,800 ft20 h
Man Against Horse50 MilesPrescott, AZOct 17, 20267,300 ft12.5 h
Dutch Backyard Ultra ZeewoldeBackyard (4.167-mile yards)Leersum, NetherlandsOct 17, 2026——
No Man's Land Trail Run50 KMLake Charles, LAOct 17, 2026—10 h
Oktoberfest Trail Run Festival50 KMFarmersville, TXOct 17, 2026—8 h
Palo Duro 50 km Trail Run50 KMAmarillo, TXOct 17, 2026—12 h
Palo Duro Trail Run50 MilesAmarillo, TXOct 17, 20261,915 ft12.5 h
Lemkowyna Ultra Trail 100102kmChyrowa, PolandOct 17, 202610,827 ft22 h
Lemkowyna Ultra Trail 100150kmChyrowa, PolandOct 17, 202619,226 ft35 h
Pumpkin Holler Hunnerd100 MilesTahlequah, OKOct 17, 20265,771 ft30 h
Pumpkin Holler Hunnerd50 KMTahlequah, OKOct 17, 20261,718 ft29 h
Pumpkin Holler Hunnerd100 KMTahlequah, OKOct 17, 20263,537 ft31 h
Rise Running Festival50 KMGalveston, TXOct 17, 2026—9 h
Rock Bridge Revenge 50 km Race50 KMColumbia, MOOct 17, 20263,267 ft8 h
Rogue Gorge50 KMUnion Creek, OROct 17, 20262,550 ft9 h
Rogue Gorge50 MilesUnion Creek, OROct 17, 20264,100 ft13 h
Shake Your Trail Feather Trail Run50 KMCharleston, ILOct 17, 20264,000 ft10 h
Shake Your Trail Feather Trail Run100 KMCharleston, ILOct 17, 2026—24 h
Silver Falls50 KMSilverton, OROct 17, 2026—9.5 h
Sinnemahone Ultra Marathon50 KMEmporium, PAOct 17, 2026—8 h
Sonoma Fall Classic100 MilesHealdsburg, CAOct 17, 202625,058 ft36 h
Sonoma Fall Classic50 MilesHealdsburg, CAOct 17, 202610,612 ft14 h
South Texas Ultra50 KMLeakey, TXOct 17, 20262,200 ft14 h
Surf the Murph 50 km Run50 KMSavage, MNOct 17, 2026—9 h
Surf the Murph Run50 MilesSavage, MNOct 17, 2026—14 h
Tecumseh Trail Challenge50 KMNashville, INOct 17, 20264,100 ft10.5 h
The Itch50 KMOcala, FLOct 17, 2026430 ft9 h
The Jackalope Lope50 KMRedding, CAOct 17, 20267,000 ft9.5 h
The Peak 50K50 KMJulian, CAOct 17, 20266,348 ft10 h
The Unbridled50 KMHillsdale, KSOct 17, 2026—10 h
The Unbridled 50 Mile50 MilesHillsdale, KSOct 17, 2026——
The Wicked Windstone100 MilesColumbia Cross Roads, PAOct 17, 202610,000 ft30 h
The Wicked Windstone50 KMColumbia Cross Roads, PAOct 17, 20263,000 ft9.5 h
The Wicked Windstone100 KMColumbia Cross Roads, PAOct 17, 20266,000 ft30 h
Uwharrie 100 Mile and Trail Run100 MilesTroy, NCOct 17, 202617,420 ft36 h
Uwharrie and 100K Trail Run100 KMTroy, NCOct 17, 202610,452 ft35 h
Uwharrie Gold Rush50 KMMt Gilead, NCOct 17, 2026—12 h
Walking Tall 50/25K50 KMPocahontas, TNOct 17, 2026—9 h
Wild Duluth 50 km Races50 KMDuluth, MNOct 17, 20263,685 ft16 h
Wild Duluth Races100 KMDuluth, MNOct 17, 20267,061 ft18 h
Bimblers Bluff 50k50 KMGuilford, CTOct 18, 20264,500 ft10 h
City to Sky 50K50 KMMissoula, MTOct 18, 20267,800 ft11 h
FSR 100100 MilesCopperhill, TNOct 18, 202615,000 ft30 h
GOATZ Trail Runs50 KMOmaha, NEOct 18, 20261,500 ft9 h
GOATZ Trail Runs50 MilesOmaha, NEOct 18, 20263,500 ft14.5 h
River Shimanto100kmShimanto, JapanOct 18, 20262,297 ft14 h
Ultramarathon Okumusashi Quintet70kmMoroyama, JapanOct 18, 20262,454 ft12 h
Little Duck 50k50 KMWindham, MEOct 18, 20264,000 ft8 h
Crater Rim Ultra 53km53kmDiamond Harbour, New ZealandOct 18, 20267,657 ft10.5 h
The Endless Mile50 KMAlabaster, ALOct 22, 2026——
MOGAN MOUNTAIN RUNNING RACE50 kmMoganshan, ChinaOct 23, 20268,310 ft15 h
MOGAN MOUNTAIN RUNNING RACE67 kmMoganshan, ChinaOct 23, 202611,906 ft19 h
MOGAN MOUNTAIN RUNNING RACE99 kmMoganshan, ChinaOct 23, 202618,737 ft30 h
Moganshan 65 Ultra Trail100kmHuzhou City, ChinaOct 23, 202619,367 ft30 h
Moganshan 65 Ultra Trail65kmHuzhou City, ChinaOct 23, 202611,870 ft19 h
Commodore 24 Hour Challenge48 MilesPanama City, FLOct 23, 2026—13.5 h
Backyard TarragonaBackyard (4.167-mile yards)Tarragona, SpainOct 23, 2026——
Hare Mountain 100100 MilesHagarville, AROct 23, 2026—38 h
Hare Mountain 10060 KMClarksville, AROct 23, 2026—12 h
Hare Mountain 10050 MilesClarksville, AROct 23, 202612,000 ft16 h
Puglia by UTMB - I Sassi di Matera141kmMatera, ItalyOct 23, 202611,483 ft27 h
No Business 100100 MilesJamestown, TNOct 23, 202610,696 ft34 h
San Diego 100 Mile Endurance Run100 MilesEscondido, CAOct 23, 2026—30 h
San Diego Endurance Run50 MilesEscondido, CAOct 23, 2026—14 h
San Diego 200200 MilesEscondido, CAOct 23, 202615,600 ft32 h
The Wasatch YardBackyard (4.167-mile yards)Park City, UTOct 23, 2026——
Andy’s Backyard UltraBackyard (4.167-mile yards)Earlysville, VAOct 24, 2026370 ft—
Smurf's Backyard UltraBackyard (4.167-mile yards)Cairns, AustraliaOct 24, 2026——
Autumn Leaves 50/5050 KMSt. Paul, OROct 24, 2026—9.75 h
Autumn Leaves 50/5050 MilesSt. Paul, OROct 24, 2026—9.75 h
Bohemian Alps 50K50 KMBrainard, NEOct 24, 2026—10.5 h
Bridge Burner Ultra 35 Mile35 MileCanon City, COOct 24, 20264,400 ft9.5 h
Bridge Burner Ultra 50K50KCanon City, COOct 24, 20264,200 ft9.5 h
Cactus Rose100 MilesBandera, TXOct 24, 202610,341 ft40 h
Cactus Rose 50 Mile50 MilesBandera, TXOct 24, 20265,000 ft27.5 h
Call of the Wilds Mountain Fest50 KMWaterville, PAOct 24, 20268,000 ft11 h
Canyonlands Ultra 100K100KMoab, UTOct 24, 20267,828 ft17 h
Canyonlands Ultra 50K50KMoab, UTOct 24, 20262,644 ft12 h
Canyonlands Ultra 50 Mile50 MileMoab, UTOct 24, 20265,220 ft17 h
Cougar Mountain Trail Run Series50 KMBellevue, WAOct 24, 2026—9 h
Alb Marathon Schwäbisch Gmünd50kmSchwäbisch Gmünd, GermanyOct 24, 20263,609 ft7.5 h
Alb Marathon Schwäbisch Gmünd59 kmSchwäbisch Gmünd, GermanyOct 24, 20266,847 ft8.5 h
Dead Last UltraBackyard (4.167-mile yards)Sutton, MAOct 24, 2026——
Door County Fall 5050 MilesSturgeon Bay, WIOct 24, 20261,800 ft11 h
ECT 50 Ultra Marathon50 KMPouch Cove, NLOct 24, 20266,417 ft12 h
Fancy Nonsense 50 km Race50 KMWillow Springs, ILOct 24, 20262,800 ft9 h
Fields of Gold 50K50 KMMarble Falls, TXOct 24, 20262,000 ft8.5 h
Firewater50 KM (Sunrise)Greenback, TNOct 24, 20263,000 ft9.5 h
Firewater100 KMGreenback, TNOct 24, 20266,000 ft19.5 h
Fonta Flora 50k50 KMNebo, NCOct 24, 20262,400 ft9.5 h
Gate2Gate Trail Run50 KMAlachua, FLOct 24, 20261,100 ft8 h
Georgia Sky to Summit 50k50 KMClayton, GAOct 24, 20267,500 ft11 h
Huntsville Run Fest50 KMHuntsville, ALOct 24, 20265,500 ft11 h
Island View - Endurance Run100 MilesGoleta, CAOct 24, 202625,000 ft36 h
Island View - Endurance Run50 KMGoleta, CAOct 24, 20268,300 ft12 h
Island View - Endurance Run100 KMGoleta, CAOct 24, 202616,600 ft24 h
Puglia by UTMB - Le Maioliche di LaterzaI Sassi di MateraLaterza, ItalyOct 24, 202611,483 ft27 h
Puglia by UTMB - Le Maioliche di LaterzaCastellaneta Underground Trail Laterza, ItalyOct 24, 20263,281 ft8.75 h
Puglia by UTMB - Le Maioliche di Laterza85kmLaterza, ItalyOct 24, 20266,562 ft15 h
Puglia by UTMB - Le Maioliche di LaterzaLe Maioliche di LaterzaLaterza, ItalyOct 24, 20266,562 ft15 h
Manno Mountain Madness 202680kmNakato, JapanOct 24, 202618,373 ft17 h
Kansas Rails-to-Trails Extravaganza100 MilesOttawa, KSOct 24, 20261,775 ft30 h
Kansas Rails-to-Trails Extravaganza50 KMOttawa, KSOct 24, 2026500 ft28 h
Kansas Rails-to-Trails Extravaganza50 MilesOttawa, KSOct 24, 2026850 ft29 h
Kansas Rails-to-Trails Extravaganza100 KMOttawa, KSOct 24, 20261,000 ft30 h
Lake Murray Endurance Run100 MilesArdmore, OKOct 24, 20267,500 ft32 h
Lake Murray Endurance Run50 KMArdmore, OKOct 24, 20262,400 ft24 h
Lake Murray Endurance Run100 KMArdmore, OKOct 24, 20264,800 ft30 h
Mad Maple 50K @ Hueston Woods50 KMCollege Corner, OHOct 24, 20262,525 ft8.5 h
Mammoth Cave 50K/25K50 KMMammoth Cave, KYOct 24, 20262,200 ft8 h
Mujeres and Marigolds50 KMSmithville, TXOct 24, 20262,100 ft23.5 h
Mujeres and Marigolds100 KMSmithville, TXOct 24, 20264,200 ft24 h
New Hope Wesleyan Ultra Trail Run50 KMCorydon, INOct 24, 20263,500 ft11 h
No Name Trail Races50 KMAgoura, CAOct 24, 20265,200 ft11 h
Patapsco Valley 50K50 KMBaltimore, MDOct 24, 20263,093 ft10 h
Peacock Challenge55 MilesWaialua, HIOct 24, 202612,500 ft—
Pinkathon Challenge for Breast Cancer50 KMSan Francisco, CAOct 24, 20261,620 ft9.5 h
Prisoner of War 50 km Ultra Race50 KMSpartanburg, SCOct 24, 2026—9 h
Range of Light Trail50 KMBishop, CAOct 24, 20265,600 ft12 h
Red Dirt Rambler60 KMShreveport, LAOct 24, 2026—10.5 h
Red Dirt Rambler100 KMShreveport, LAOct 24, 2026—19 h
Rim to River 100100 MilesNew River Gorge, WVOct 24, 202612,000 ft32 h
Run With Scissors52.4 miHinckley, OHOct 24, 2026——
SARR Rocky Horror Trail Run50 KMSan Antonio, TXOct 24, 20264,000 ft12 h
Show Me Your Free State Ultra100 MilesSt. Joseph, MOOct 24, 2026552 ft30 h
Show Me Your Free State Ultra50 KMSt. Joseph, MOOct 24, 2026138 ft9 h
Show Me Your Free State Ultra50 MilesSt. Joseph, MOOct 24, 2026276 ft15 h
Summit 50/5050 KMSalamanca, NYOct 24, 20264,800 ft8 h
Summit 50/5050 MilesSalamanca, NYOct 24, 20267,200 ft14 h
The Barnyard Backyard UltraBackyard (4.167-mile yards)Erie, COOct 24, 2026200 ft—
The New Orleans Ultramarathon50 KMNew Orleans, LAOct 24, 2026—8 h
The New Orleans Ultramarathon and Half50 MilesNew Orleans, LAOct 24, 2026600 ft12 h
Trail of Terror50 KMLas Vegas, NVOct 24, 2026—10 h
Trail Run at Sly Park - Fall50 KMPollock Pines, CAOct 24, 20265,000 ft9 h
Triple Lakes Trail Race40 MilesGreensboro, NCOct 24, 20263,111 ft12 h
Tussey Mountainback100 MilesBoalsburg, PAOct 24, 202610,970 ft28 h
Womp Romp50 KMHingham, MAOct 24, 20262,000 ft9 h
WXT Ultra Trail Races50 KMHopewell Township, NJOct 24, 20263,000 ft8.5 h
Yippee-Ki-Yay 50 km Race50 KMCouncil Bluffs, IAOct 24, 2026800 ft9 h
Big Brad Ultras50 KMPownal, MEOct 25, 20264,500 ft9 h
Big Brad Ultras50 MilesPownal, MEOct 25, 2026—13.5 h
Day of the Dead Series50 KMLas Cruces, NMOct 25, 2026—11.5 h
Fall Freakin Fun Run50 KMKirkland, WAOct 25, 2026——
Hixon 5050 KMLa Crosse, WIOct 25, 20265,000 ft9.417 h
Puglia by UTMB - Castellaneta Underground Trail50kmCastellaneta, ItalyOct 25, 20263,281 ft8.75 h
Jack's Trail Race50 KMPalm Coast, FLOct 25, 2026130 ft9 h
Forestrail Shinjo-Hiruzen68kmShinjo, JapanOct 25, 202610,499 ft14 h
Lost Souls Trail Run50 KMSmithville, TXOct 25, 2026—9 h
Stone Steps50 KMCincinnati, OHOct 25, 2026—9 h
Tussey Mountainback50 KMBoalsburg, PAOct 25, 20263,200 ft12 h
Tussey Mountainback50 MilesBoalsburg, PAOct 25, 20265,485 ft12 h
WTF Dark Sky 220 Cherry Springs 110 Wooly220 MilesLock Haven, PAOct 25, 202637,200 ft111.5 h
Machete Muertos 200100 MilesPerris, CAOct 28, 2026—48 h
Machete Muertos 200200 MilesPerris, CAOct 28, 202644,000 ft96 h
Machete Trail Madness 50 Miler50 MilesPerris, CAOct 28, 2026—24 h
WTF Dark Sky 220 Cherry Springs 110 Wooly110 MilesLock Haven, PAOct 28, 202618,500 ft54 h
Backyard Infinity Trail Camaret-sur-MerBackyard (4.167-mile yards)Camaret-sur-Mer, FranceOct 30, 2026——
Chartreuse Backyard UltraBackyard (4.167-mile yards)Saint-Laurent-du-Pont, FranceOct 30, 2026——
Hell Creek Race100 MilesSylvan Grove, KSOct 30, 202610,120 ft32 h
Hell Creek Race140 MilesSylvan Grove, KSOct 30, 202614,168 ft50 h
Hell Creek Race50 KMSylvan Grove, KSOct 30, 2026—9.5 h
Hell Creek 100 km Race100 KMSylvan Grove, KSOct 30, 20266,072 ft24 h
Lone Wolf 135135 MilesGriffin, GAOct 30, 202620,000 ft48 h
Kullamannen Sprint Ultra 100 km108kmHöganäs, SwedenOct 30, 20262,461 ft20 h
Kullamannen Ultra108 kmHöganäs, SwedenOct 30, 20262,461 ft20 h
Kullamannen Ultra173kmHöganäs, SwedenOct 30, 20267,546 ft32 h
Kullamannen Ultra53 kmHöganäs, SwedenOct 30, 20262,395 ft10 h
WTF Dark Sky 220 Cherry Springs 110 Wooly 50k50 KMLock Haven, PAOct 30, 20266,848 ft11 h
11th Hour Bear Creek Backyard UltraBackyard (4.167-mile yards)Lakewood, COOct 31, 2026——
Almaden Hills Trail Run - Fall50 KMSan Jose, CAOct 31, 20268,222 ft9.5 h
Camino De Los Muertos50 KMLewisville, TXOct 31, 2026—9 h
Caspers Trail Races50 KMSan Juan Capistrano, CAOct 31, 20264,948 ft9.5 h
Chicago Lakefront: Fall Version50 KMChicago, ILOct 31, 2026—9 h
Chicago Lakefront: Fall Version50 MilesChicago, ILOct 31, 2026—11 h
Ultimate Tsaigu Trail Kuocang105kmZhejiang, ChinaOct 31, 202621,906 ft28.5 h
Ultimate Tsaigu Trail Kuocang50kmZhejiang, ChinaOct 31, 20268,625 ft10.75 h
Mallorca by UTMB - Camins de Pedra Seca102kmEstellencs, SpainOct 31, 202612,270 ft21.5 h
Mallorca by UTMB - Els Tres Mils56kmSelva, SpainOct 31, 20268,038 ft12 h
Fall Back Blast Trail Run50 KMEau Claire, WIOct 31, 20261,836 ft9 h
Fall Back Into The Trails 50k50 KMLagrangeville, NYOct 31, 20265,000 ft11 h
Fall Back Into The Trails100 KMLagrangeville, NYOct 31, 202610,000 ft20 h
Fall Creek Beast50 KMSwan Valley, IDOct 31, 20266,000 ft9 h
Fire Tower Frenzy40 MilesEllijay, GAOct 31, 2026—11 h
Fire Tower Frenzy100 KMEllijay, GAOct 31, 2026—19 h
Harvest Trail Running Festival50 KMFarmersville, TXOct 31, 2026—9 h
Outopia HK Wild 5050kmHok Tau, Hong Kong, ChinaOct 31, 20268,904 ft14 h
Outopia HK Wild 5073 kmHok Tau, Hong Kong, ChinaOct 31, 202612,674 ft18 h
Javelina Jundred Endurance Run100 MilesFountain Hills, AZOct 31, 20265,200 ft30 h
Javelina Jundred 100 km Endurance Run100 KMFountain Hills, AZOct 31, 20263,956 ft29 h
OSJ Kami 100101kmHyogo Pref., JapanOct 31, 202617,418 ft25 h
OSJ Kami 10067kmHyogo Pref., JapanOct 31, 202611,417 ft15.5 h
Last Wolf HowlingBackyard (4.167-mile yards)Mandeville, LAOct 31, 2026——
Ozark Trail 100 Mile Endurance Run100 MilesSteelville, MOOct 31, 202612,000 ft32 h
Pumpkin Butt50 KMKennesaw, GAOct 31, 20265,600 ft9 h
Savannah Rails to Trails 50k \| 25k50 KMSavannah, GAOct 31, 2026——
Terror Trails Ultra50 KMWaxhaw, NCOct 31, 2026—7 h
Thunder River50 KMCascade Locks, OROct 31, 20265,000 ft8.5 h
Kat'cina Mosa 100K100KSpringville, UTOct 2, 202716,000 ft23 h