Find My Ultra

Ultramarathons in May

The 376 ultramarathons that run in May, 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
Champa Ultra Race 60K60kmSan Javier, ArgentinaMay 1, 202711,155 ft18 h
Diverge Skyruns 50km50kmQueenstown, AustraliaMay 1, 20279,091 ft11 h
Wuyishan Trail Race100kmWuyishan City, ChinaMay 1, 202714,124 ft30 h
Wuyishan Trail Race60kmWuyishan City, ChinaMay 1, 20278,737 ft15 h
Collegiate Peaks 50 Mile50 MileBuena Vista, COMay 1, 20277,000 ft12 h
Conquer the BeastBackyard (4.167-mile yards)Pierce, NEMay 1, 2027——
Desert Wolf50 KMJohnson City, TXMay 1, 20272,800 ft12 h
Desert Wolf100 KMJohnson City, TXMay 1, 20275,600 ft21 h
Folsom Lake Trail Run - Spring50 KMFolsom, CAMay 1, 20274,027 ft9 h
G1M UltraBackyard (4.167-mile yards)Round Rock, TXMay 1, 2027——
Fife Pilgrim Way Ultra Marathon90kmNorth Queensferry, United KingdomMay 1, 20273,937 ft15 h
Malvern Hills Ultra47miAdmiral Rodney, United KingdomMay 1, 20279,646 ft13 h
Pennine Barrier Ultra 5050miMalham, United KingdomMay 1, 20278,507 ft18 h
Tihio Race (Wolf's race)57kmTichio, GreeceMay 1, 20279,350 ft10.5 h
Grayson Highlands50 KMMouth of Wilson, VAMay 1, 20275,000 ft11 h
Grayson Highlands50 MilesMouth of Wilson, VAMay 1, 20279,500 ft14.5 h
Greenland Trail 50K50KPalmer Lake, COMay 1, 20271,873 ft8 h
Heavens Gate Ultra32.9 miRiggins, IDMay 1, 20272,500 ft9.5 h
Ultra Trail del Mugello60kmBadia di Moscheta, ItalyMay 1, 202710,499 ft13 h
Last Person Standing by Flint Creek EnduranceBackyard (4.167-mile yards)Gentry, ARMay 1, 2027——
Vilnius Trail Run108kmVilnius, LithuaniaMay 1, 202711,811 ft20 h
Vilnius Trail Run70kmVilnius, LithuaniaMay 1, 20276,004 ft15 h
Riga-Valmiera107kmRiga, LatviaMay 1, 20271,181 ft19 h
Trail Amizmiz163 kmAmizmiz, MoroccoMay 1, 202728,802 ft44 h
Trail Amizmiz62kmAmizmiz, MoroccoMay 1, 20278,793 ft14 h
Trail Amizmiz90kmAmizmiz, MoroccoMay 1, 202713,960 ft22 h
Maple Syrup Fun Run50 KMFaribault, MNMay 1, 2027—9 h
McDonald Forest50 KMCorvallis, ORMay 1, 20276,500 ft12.5 h
Miwok100 KM 2012+ Modern CourseStinson Beach, CAMay 1, 202711,000 ft19 h
Hagemanns Backyard FestivalBackyard (4.167-mile yards)Svelvik, NorwayMay 1, 2027——
Perfect Day 50K - Massanutten50 KMKeezletown, VAMay 1, 2027——
Pine Trail Run50 KMPine, AZMay 1, 2027——
Riverlands 100100 MilesTurner, MEMay 1, 2027—32 h
Rock the Ridge50 MilesNew Paltz, NYMay 1, 20274,619 ft18 h
Run Happy 50K50 KMNorth Liberty, INMay 1, 2027—8 h
Santa Clarita Trail Race60 KMSanta Clarita, CAMay 1, 20277,652 ft13 h
Santa Clarita Trail Race100 KMSanta Clarita, CAMay 1, 202712,863 ft23 h
Santa Clarita Trail Race120 KMSanta Clarita, CAMay 1, 202715,304 ft27.5 h
Sasquatch Shuffle TX50 KMGrapeland, TXMay 1, 2027—19 h
Sasquatch Shuffle TX100 KMGrapeland, TXMay 1, 2027—20 h
Spartan Trail - Bear Mountain Trail Challenge50 KMTomkins Cove, NYMay 1, 20274,081 ft9 h
Strolling Jim™40 MilesWartrace, TNMay 1, 2027—11 h
Sun Mountain50 KMWinthrop, WAMay 1, 20275,474 ft15 h
Sun Mountain50 MilesWinthrop, WAMay 1, 20279,441 ft16 h
Sunshine Double50 KMWinter Park, FLMay 1, 2027—9.5 h
The Big Deal at Great Seal100 MilesChillicothe, OHMay 1, 2027—35 h
The Big Deal at Great Seal50 KMChillicothe, OHMay 1, 2027—9 h
The Big Deal at Great Seal100 KMChillicothe, OHMay 1, 2027—34.5 h
Tuthell 50K50 KMSioux Falls, SDMay 1, 20279,000 ft12 h
Van Cortlandt Park 50k50 KMBronx, NYMay 1, 20272,200 ft8.5 h
Wild Wild West Marathon And Ultra50 KMLone Pine, CAMay 1, 2027—12 h
Wild Wild West Marathon And Ultra50 MilesLone Pine, CAMay 1, 2027—14 h
Collegeville Ultra50 KMCollegeville, MNMay 2, 2027—9.5 h
Trail Nivolet Revard53kmVoglans, FranceMay 2, 20279,843 ft10.5 h
Ultra X 50km Scotland50kmFort Augustus, United KingdomMay 2, 20274,528 ft13.5 h
Ultra X 50km Scotland60kmFort Augustus, United KingdomMay 2, 20276,988 ft15 h
Crete Senesi Ultra Marathon50kmRapolano Terme (SI), ItalyMay 2, 20272,625 ft10 h
Sisters Country50 KMSisters, ORMay 2, 20272,400 ft9.5 h
The BIG 5050 KMPine Mountain, GAMay 2, 2027—10 h
The Blue 2 Blue Challenge50 KMNew Haven, CTMay 2, 20276,350 ft10 h
Bradshaw Brute100 MilesBlack Canyon City, AZMay 3, 202720,838 ft38 h
Cocodona 250250 MilesBlack Canyon City, AZMay 3, 202738,791 ft125 h
Mingus Traverse80 MilesBlack Canyon City, AZMay 4, 202710,002 ft44.75 h
Sedona Canyons125 MilesBlack Canyon City, AZMay 5, 202714,205 ft75 h
Witiker Backyard UltraBackyard (4.167-mile yards)Zürich, SwitzerlandMay 6, 2027——
Flagstaff Crest40 MilesBlack Canyon City, AZMay 7, 20273,964 ft27 h
Czechia Backyard Ultra RunBackyard (4.167-mile yards)Holesov, Czech RepublicMay 7, 2027——
La Pastourelle - Le Grand Cirque60kmSalers, FranceMay 7, 20279,482 ft12 h
Hellbender 100100 MilesOld Fort, NCMay 7, 202723,000 ft40 h
Ultra Trail Du Temple100 kmSan Vito Lo Capo, ItalyMay 7, 202713,780 ft22 h
Ultra Trail Du Temple60 kmSan Vito Lo Capo, ItalyMay 7, 20278,202 ft12 h
Wausaultra Backyard Ultra and Double DownBackyard (4.167-mile yards)Wausau, WIMay 7, 2027——
Wörthersee Trail Festival64kmPörtschach, AustriaMay 8, 20275,906 ft12 h
Margaret River Ultra78.5kmHamelin Bay, AustraliaMay 8, 20275,676 ft18 h
Boise Greenbelt Relays45 MilesBoise, IDMay 8, 2027——
Dawn To Dusk To Dawn Track Ultras100 MilesSharon Hill, PAMay 8, 2027—30 h
Dawn To Dusk To Dawn Track Ultras50 KMSharon Hill, PAMay 8, 2027—9 h
Dawn To Dusk To Dawn Track Ultras50 MilesSharon Hill, PAMay 8, 2027—13.5 h
Dawn To Dusk To Dawn Track Ultras100 KMSharon Hill, PAMay 8, 2027—19 h
North Sea Ultra Sylt111kmKampen, GermanyMay 8, 2027689 ft16 h
Dirty German Endurance Fest 50 km50 KMPhiladelphia, PAMay 8, 2027—10.5 h
Dirty German Endurance Fest50 MilesPhiladelphia, PAMay 8, 2027—12.5 h
Don't Fence Me In Trail Run50 KMHelena, MTMay 8, 20276,123 ft9 h
Transvulcania Ultramaraton73kmFaro de Fuencaliente. La Palma, SpainMay 8, 202714,272 ft16 h
Les Coursières des Hauts du Lyonnais - Trail des Coursières104kmSaint-Symphorien-sur-Coise, FranceMay 8, 202713,780 ft19.5 h
Les Coursières des Hauts du Lyonnais - Trail des Coursières163 kmSaint-Symphorien-sur-Coise, FranceMay 8, 202720,669 ft40 h
Les Coursières des Hauts du Lyonnais - Trail des Coursières50kmSaint-Symphorien-sur-Coise, FranceMay 8, 20276,234 ft13 h
Trail des Forts du Grand Besançon62kmBesancon, FranceMay 8, 20277,874 ft11 h
Trail Des Maures - Ultra des Maures128 kmCollobrieres, FranceMay 8, 202717,979 ft30 h
Trail Des Maures - Ultra des Maures60 kmCollobrieres, FranceMay 8, 20279,718 ft13 h
Chiltern Hills 100K100kmChesham, United KingdomMay 8, 20275,906 ft18 h
Epona 100 Miler100kmAbergavenny, United KingdomMay 8, 202710,000 ft30 h
Epona 100 Miler100miAbergavenny, United KingdomMay 8, 202717,001 ft50 h
Moray Coastal Trail Race47miForres, United KingdomMay 8, 20271,201 ft16 h
Spire Ultra33miNorth Wingfield, United KingdomMay 8, 20273,707 ft9 h
The Lap Anticlockwise47miLakeside, United KingdomMay 8, 20278,202 ft24 h
Glacier Ridge50 KMPortersville, PAMay 8, 2027—10 h
Glacier Ridge50 MilesPortersville, PAMay 8, 2027—14 h
Grizzly Peak 50k50 KMBerkeley, CAMay 8, 20276,760 ft9 h
Nove Colli Running200kmCesenatico (FC), ItalyMay 8, 202710,564 ft30 h
Nove Colli Running84kmCesenatico (FC), ItalyMay 8, 20275,151 ft12 h
Ultra Trail del Lago di Como - UTLAC60122kmComo, ItalyMay 8, 202720,371 ft35 h
Ultra Trail del Lago di Como - UTLAC60251kmComo, ItalyMay 8, 202740,289 ft90 h
Ultra Trail del Lago di Como - UTLAC6062kmComo, ItalyMay 8, 202712,320 ft14 h
Jemez Mountain50 KMLos Alamos, NMMay 8, 2027—9 h
Jemez Mountain50 MilesLos Alamos, NMMay 8, 202710,050 ft—
John Wayne Grit Series - Newport Coast50 KMLaguna Beach, CAMay 8, 20275,100 ft9 h
Aso Volcano Trail114kmAso City, JapanMay 8, 202717,192 ft29 h
Lazy A Backyard UltraBackyard (4.167-mile yards)Udall, KSMay 8, 2027——
Best Dam Backyard UltraBackyard (4.167-mile yards)Waitaki, New ZealandMay 8, 2027——
Paiute Meadows Trail Run50 KMSusanville, CAMay 8, 2027—9 h
Popple Shoot Trail Races38.5 miMinong, WIMay 8, 2027—10.5 h
Popple Shoot Trail Races54.1 miMinong, WIMay 8, 2027—15 h
Quad Rock 5050 MileFort Collins, COMay 8, 202711,000 ft14 h
Quicksilver50 KMSan Jose, CAMay 8, 20276,000 ft9 h
Quicksilver100 KMSan Jose, CAMay 8, 202712,701 ft17 h
Running with my Gnomies50 KMDover, OHMay 8, 2027—10 h
Trosa Backyard UltraBackyard (4.167-mile yards)Trosa, SwedenMay 8, 2027——
TARC Wapack and Back43 MilesAshburnham, MAMay 8, 20279,200 ft12 h
TARC Wapack and Back50 MilesAshburnham, MAMay 8, 202710,800 ft14.5 h
Thunderbunny50 KMAthens, OHMay 8, 20273,517 ft9 h
Tiger Claw50 KMIssaquah, WAMay 8, 20278,000 ft10 h
Trail Mix Race50 KMRockford, MNMay 8, 2027—9 h
Traverse City Trail Running Festival50 KMTraverse City, MIMay 8, 20271,252 ft10 h
Traverse City Trail Running Festival75 KMTraverse City, MIMay 8, 20271,878 ft13.5 h
Traverse City Trail Running Festival100 KMTraverse City, MIMay 8, 20272,504 ft16 h
Valkyrie Trail Race 50k50 KMColorado Springs, COMay 8, 20274,500 ft10 h
Watuppa Trail Races50 KMFall River, MAMay 8, 2027—9 h
NeckarCross-Ultrarace Trailrunning59kmHirschhorn, GermanyMay 9, 20277,546 ft11 h
Northants Ultra 35 Shires & Spires35miNaseby, United KingdomMay 9, 20272,051 ft9 h
Tour de Hvar65 kmStari Grad, CroatiaMay 9, 20279,528 ft15 h
Wildflower Trail Run50 KMBastrop, TXMay 9, 2027—9 h
Sparta Jockey 502er500 MilesSparta NC, NCMay 10, 2027—336 h
No Time to Die Frontyard UltraBackyard (4.167-mile yards)Adelaide, AustraliaMay 14, 2027——
Ultra-Trail Australia by UTMB - UTA100100kmKatoomba, AustraliaMay 14, 202714,108 ft28 h
Ultra-Trail Australia by UTMB - UTA100100miKatoomba, AustraliaMay 14, 202723,917 ft44 h
Ultra-Trail Australia by UTMB - UTA10051 kmKatoomba, AustraliaMay 14, 20277,283 ft14.5 h
West Macs Sonder Monster127 kmAlice Springs, AustraliaMay 14, 20279,925 ft36 h
West Macs Sonder Monster231kmAlice Springs, AustraliaMay 14, 202718,648 ft60 h
West Macs Sonder Monster65 kmAlice Springs, AustraliaMay 14, 20274,232 ft17.5 h
Born to Run Ultra Marathons100 MilesLos Olivos, CAMay 14, 2027—48 h
Cruel Jewel105.9 MilesBlue Ridge, GAMay 14, 202733,000 ft48 h
Cruel Jewel 50 Mile56 MilesBlue Ridge, GAMay 14, 202715,000 ft27 h
Euskal Raid Ultra Trail - solo133kmSaint-Étienne-de-Baïgorry, FranceMay 14, 202725,591 ft36 h
Euskal Raid Ultra Trail - solo65kmSaint-Étienne-de-Baïgorry, FranceMay 14, 202712,467 ft16 h
Trail Alsace Grand Est by UTMB - Ultra-Trail des Chevaliers156kmTurckheim, FranceMay 14, 202716,732 ft40 h
Trail Alsace Grand Est by UTMB - Ultra-Trail des Païens109kmOrschwiller, FranceMay 14, 202712,795 ft24 h
Trail Alsace Grand Est by UTMB - Ultra-Trail des Païens159 kmOrschwiller, FranceMay 14, 202716,732 ft37 h
BTR Ultra100kmBangli, IndonesiaMay 14, 202722,802 ft19 h
BTR Ultra60kmBangli, IndonesiaMay 14, 202712,743 ft19 h
Backyard Ultra JabłonnaBackyard (4.167-mile yards)Jabłonna, PolandMay 14, 2027——
UTAH 115 by Grand to Grand Ultra115 MilesKanab, UTMay 14, 202713,018 ft50 h
3 Days at the Fair50 KMAugusta, NJMay 15, 2027——
Agape + 50k50 KMFuquay Varina, NCMay 15, 20276,000 ft—
Agape 100k +100 KMFuquay Varina, NCMay 15, 202712,000 ft—
Badlands Race Series100 KMBrighton, MIMay 15, 2027—19 h
Berryman 50 mile and Marathon Trail Races50 MilesPotosi, MOMay 15, 20275,000 ft14 h
Bishop High Sierra55 KMBishop, CAMay 15, 2027—9.5 h
Bishop High Sierra50 MilesBishop, CAMay 15, 2027—13.5 h
Bishop High Sierra100 KMBishop, CAMay 15, 2027—19 h
Bone Yard Trail Race50 KMBrookhaven, MSMay 15, 2027—10.5 h
Reesor 5050miMaple Creek, CanadaMay 15, 20276,483 ft18 h
Corral Canyon Trail Scramble50 KMCampo, CAMay 15, 2027—9 h
Dances with Dirt - Gnaw Bone50 KMNashville, INMay 15, 2027—9 h
Dances with Dirt - Gnaw Bone50 MilesNashville, INMay 15, 2027—13.5 h
Lafferde Loop ChallengeBackyard (4.167-mile yards)Lengede, GermanyMay 15, 2027——
Death by 5k Waterloo50 KMWaterloo, IAMay 15, 2027—11.5 h
Die to Run Backyard UltraBackyard (4.167-mile yards)Muskogee, OKMay 15, 2027——
Dirty Turtle50 KMBremerton, WAMay 15, 20278,000 ft13 h
East Texas Ultra50 KMPittsburg, TXMay 15, 20272,681 ft11 h
Spain Backyard UltraBackyard (4.167-mile yards)Castro Caldelas, SpainMay 15, 2027——
Flower Moon50 MilesPawhuska, OKMay 15, 2027—13.5 h
Festa Trail Pic Saint-Loup - Hérault Trail105kmBrissac, FranceMay 15, 202714,764 ft28 h
Festa Trail Pic Saint-Loup - Hérault Trail65kmBrissac, FranceMay 15, 20279,186 ft16 h
Trail de Haute-Provence - THP50122kmLardiers, FranceMay 15, 202718,045 ft35 h
Trail de Haute-Provence - THP50166kmLardiers, FranceMay 15, 202722,966 ft46 h
Trail de Haute-Provence - THP5065kmLardiers, FranceMay 15, 20278,990 ft13 h
Trail de Haute-Provence - THP5080kmLardiers, FranceMay 15, 202711,155 ft18 h
Volvic Volcanic Expérience - Trail Terra Volcana105 kmVolvic, FranceMay 15, 20279,675 ft20.5 h
Volvic Volcanic Expérience - Trail Terra Volcana67 kmVolvic, FranceMay 15, 20276,946 ft10 h
Volvic Volcanic Expérience - Trail Terra Volcana82kmVolvic, FranceMay 15, 20278,858 ft17.5 h
Five Rivers Ultra100miShotley, United KingdomMay 15, 20273,281 ft32 h
Five Rivers Ultra50kmShotley, United KingdomMay 15, 2027984 ft9 h
Five Rivers Ultra50miShotley, United KingdomMay 15, 20271,640 ft24 h
Maverick Cotswolds Trail51kmWinchcombe, United KingdomMay 15, 20274,528 ft8.5 h
In It For The Long Run50 KMHuntsville, ALMay 15, 2027—8 h
In It For The Long Run50 MilesHuntsville, ALMay 15, 2027—12 h
Gran Raid delle Prealpi Trevigiane - GR8061 kmSegusino, ItalyMay 15, 202711,726 ft14 h
Gran Raid delle Prealpi Trevigiane - GR8080kmSegusino, ItalyMay 15, 202715,584 ft18 h
Keys Ultras100 MilesKey Largo, FLMay 15, 2027—32 h
Keys Ultras50 KMKey West, FLMay 15, 2027—12 h
Keys Ultras50 MilesKey West, FLMay 15, 2027—20 h
Manchester to Monadnock Ultramarathon50 MilesManchester, NHMay 15, 2027—13.5 h
Massanutten Mountain Trails 100 Mile Run100 MilesFort Valley, VAMay 15, 202718,500 ft36 h
Napa Wilderness Trail Runs50 KMNapa, CAMay 15, 20275,547 ft10.5 h
Napa Wilderness Trail Runs40 MilesNapa, CAMay 15, 2027—11 h
Salomon Koning van Spanje Trail60kmGulpen, NetherlandsMay 15, 20276,070 ft14 h
Salomon Koning van Spanje Trail85kmGulpen, NetherlandsMay 15, 20278,202 ft15 h
O'Neill Park Trail Races50 KMTrabuco Canyon, CAMay 15, 20273,077 ft9.5 h
Possum's Revenge56 KMGraford, TXMay 15, 2027—17 h
Possum's Revenge52 MilesGraford, TXMay 15, 2027—20.5 h
Possum's Revenge69 MilesGraford, TXMay 15, 20271,460 ft23 h
Quest for the Crest 50k50 KMBurnsville, NCMay 15, 202712,000 ft15 h
Ram Party 50K50KColorado Springs, COMay 15, 20274,412 ft17 h
Ram Party 55 Mile55 MileColorado Springs, COMay 15, 20276,964 ft17 h
Ram Party 60K60KColorado Springs, COMay 15, 20273,279 ft15 h
Rim Rock 50 Mile Trail Challenge50 MilesNapa, CAMay 15, 2027—14 h
Rothrock by UTMB50 KMBoalsburg, PAMay 15, 20275,085 ft9 h
Rumble on the RidgeBackyard (4.167-mile yards)Arena, WIMay 15, 2027300 ft—
Silver State50 KMReno, NVMay 15, 20275,500 ft9 h
Silver State50 MilesReno, NVMay 15, 20279,000 ft13.5 h
Sky Pilots Ouray Backyard UltraBackyard (4.167-mile yards)Ouray, COMay 15, 2027140 ft—
South Mountain Reservation Mayapple Trail Runs50 KMMillburn, NJMay 15, 20276,095 ft9 h
South Mountain Reservation Mayapple Trail Runs50 MilesMillburn, NJMay 15, 20276,095 ft13 h
Tails & Trails State Forest Run50 KMPittsfield, MAMay 15, 2027—9 h
The PIASA50 KMSt Louis, MOMay 15, 2027—9 h
Tie Dye50 KMYellow Springs, OHMay 15, 2027—9 h
Tillamook Burn Trail Run50 MilesTimber, ORMay 15, 202711,537 ft—
Trails To the Sky 50k/10k50 KMGlen Gardner, NJMay 15, 20274,500 ft9 h
Badlands Race Series50 KMBrighton, MIMay 16, 2027—9 h
C'mon Armageddon50 KMWest Milford, NJMay 16, 20277,000 ft12.5 h
First State Trail Race50 KMWilmington, DEMay 16, 2027—8 h
Ultratrail de la Ligne Rouge101kmThiescourt, FranceMay 16, 20274,265 ft17 h
The Keswick 50K Trail Race Ultra50kmKeswick, United KingdomMay 16, 20276,545 ft10 h
Highball to Thurmond Ultra & Relay50 KMThurmond, WVMay 16, 20273,120 ft11.75 h
Highball to Thurmond Ultra & Relay50 Miles (14 Hour Time Limit)Thurmond, WVMay 16, 20275,000 ft14 h
Yatsugatake Nobeyama100kmNobeyama, JapanMay 16, 20276,562 ft14 h
Yatsugatake Nobeyama68kmNobeyama, JapanMay 16, 20274,265 ft9.83 h
Rock On Lake Perry50 KMMeriden, KSMay 16, 2027—9 h
Tillamook Burn Trail Run55 KMTimber, ORMay 16, 20278,480 ft—
Infinitus888 KMRipton, VTMay 20, 202799,090 ft240 h
Pigtails Challenge200 MilesRenton, WAMay 20, 202718,900 ft86.5 h
NUTS Karhunkierros 166km Trail Ultra166kmRuka, FinlandMay 21, 202712,402 ft34 h
NUTS Karhunkierros 166km Trail Ultra55kmRuka, FinlandMay 21, 20274,921 ft12 h
NUTS Karhunkierros 166km Trail Ultra83kmRuka, FinlandMay 21, 20276,201 ft18 h
Adrenaline Night Runs50 KM New course in 2018Fountain Hills, AZMay 22, 20272,163 ft10 h
Austin's Backyard UltraBackyard (4.167-mile yards)Lago Vista, TXMay 22, 2027——
Backyard Ultra of Northern UtahBackyard (4.167-mile yards)Mantua, UTMay 22, 202720 ft—
Big Wolf’s Backyard Ultra – LévisBackyard (4.167-mile yards)Levis, CanadaMay 22, 2027——
Suffer on Centennial100kmWest Hawk Lake, CanadaMay 22, 20276,339 ft18 h
Suffer on Centennial50kmWest Hawk Lake, CanadaMay 22, 20273,560 ft16 h
Crown of the Crest100 MilesFremont, NEMay 22, 2027—30 h
GutsMuths-Rennsteiglauf73.9kmEisenach, GermanyMay 22, 20276,148 ft12 h
Schloss Harkotten Ultra Marathon51kmWarendorf, GermanyMay 22, 2027328 ft8 h
Drummer Hill Trail Races50 KMKeene, NHMay 22, 2027——
Girona RunThrough Trail100kmGirona, SpainMay 22, 20279,449 ft21 h
Girona RunThrough Trail50kmGirona, SpainMay 22, 20273,707 ft10 h
Fools 2-4-8 Hour Trail Run50 KMPeninsula, OHMay 22, 2027——
Fools 2-4-8 Hour Trail Run50 MilesPeninsula, OHMay 22, 2027——
Fools 2-4-8 Hour Trail Run100 KMPeninsula, OHMay 22, 2027——
L'Ultra Bri'zeuse50kmBrix, FranceMay 22, 20274,593 ft7 h
Le Grand Raid 73112 kmCruet, FranceMay 22, 202726,460 ft24.5 h
Le Grand Raid 7351 kmCruet, FranceMay 22, 202711,260 ft12 h
Le Grand Raid 7376kmCruet, FranceMay 22, 202717,388 ft19 h
Trail de Minuit60kmLa Possession, FranceMay 22, 202710,827 ft17.5 h
Hardmoors 110110miFiley, United KingdomMay 22, 202719,685 ft36 h
Hardmoors 110200miFiley, United KingdomMay 22, 202724,301 ft60 h
Panopticons Ultra52kmBlackburn, United KingdomMay 22, 20274,692 ft10 h
The Fox 62k62kmGodalming, United KingdomMay 22, 20272,461 ft11 h
High Lea 6/12/24 hour100 MilesRichfield, OHMay 22, 20277,705 ft30 h
Wild Atlantic Ultra50miLouisburgh, IrelandMay 22, 20272,625 ft11 h
100 km del Passatore, Firenze-Faenza100kmFirenze, ItalyMay 22, 20274,265 ft20 h
Dolomites Last LoopBackyard (4.167-mile yards)Dobbiaco, ItalyMay 22, 2027——
Louisville's Lovin' the Hills50 KMLouisville, KYMay 22, 2027—9 h
Manchester to Monadnock Ultramarathon55 MilesManchester, NHMay 22, 2027—15 h
May Madness 50k50 KMHoffman, NCMay 22, 2027—9 h
Mission Trails Twilight Runs50 KMSan Diego, CAMay 22, 20277,270 ft10 h
Nanny Goat100 MilesRiverside, CAMay 22, 2027—30 h
Pigtails Challenge100 MilesRenton, WAMay 22, 20279,000 ft34 h
Pigtails Challenge150 MilesRenton, WAMay 22, 202714,400 ft65 h
Pigtails Challenge100 KMRenton, WAMay 22, 20275,400 ft19 h
Rise Up Hero Trail Runs at Settlers Cabin Park50 KMPittsburgh, PAMay 22, 20274,600 ft9 h
Run for Amma50 KMSunnyvale, CAMay 22, 20275,377 ft8 h
Run Ragged Last Person StandingBackyard (4.167-mile yards)Berlin, CTMay 22, 2027——
Salt Lake Foothills Trail Races50 KMSalt Lake City, UTMay 22, 20276,200 ft11 h
Salt Lake Foothills Trail Races50 MilesSalt Lake City, UTMay 22, 202710,300 ft16 h
Samson's Revenge50 KMEstes Park, COMay 22, 20276,000 ft9 h
Backyard Ultra VängeBackyard (4.167-mile yards)Vänge, SwedenMay 22, 2027——
Sparks Backyard UltraBackyard (4.167-mile yards)Sparks, NVMay 22, 2027——
Stumptown Trail Runs50 KMPortland, ORMay 22, 20274,000 ft10 h
Superior Spring 50 km Trail Race50 KMLutsen, MNMay 22, 20274,200 ft9 h
Trail Festival at Pineland Farms50 KMNew Gloucester, MEMay 22, 2027—9 h
Trail Festival at Pineland Farms50 MilesNew Gloucester, MEMay 22, 2027—13.5 h
Trail Festival at Pineland Farms100 KMNew Gloucester, MEMay 22, 2027—19 h
Wicked Root 50k50 KMLowell, NCMay 22, 2027—10 h
Holy Cowan's Gap 50K50 KMFort Loudon, PAMay 23, 20275,403 ft9 h
Medvednica Trail - Kemeni Svati62kmZagreb, CroatiaMay 23, 20278,268 ft13 h
Pigtails Challenge50 KMRenton, WAMay 23, 20272,700 ft10 h
Rocky Mountain 50K50 KMLaramie, WYMay 23, 2027—9 h
Sweat, Swat 'n Swear! 50 km Run50 KMInverness, FLMay 23, 20271,600 ft10 h
Infinitus250 MilesRipton, VTMay 25, 202745,740 ft117 h
Run Across Georgia277.2 MilesTybee Island, GAMay 26, 2027—111.5 h
Paradise Backyard UltraBackyard (4.167-mile yards)Paradise, CanadaMay 28, 2027——
Coalfields Backyard UltraBackyard (4.167-mile yards)Williamson, WVMay 28, 2027——
Hardmoors 160 (The Ring Of Steele)160miHelmsley, United KingdomMay 28, 202722,001 ft50 h
Infinitus100 MilesRipton, VTMay 28, 202717,310 ft46 h
Soria Moria til Verdens Ende169 kmVoksenkollen, NorwayMay 28, 202713,310 ft35 h
Soria Moria til Verdens Ende86 kmVoksenkollen, NorwayMay 28, 20275,758 ft21 h
Mountain Ultra Trail by UTMB - MUT 6098kmGeorge, South AfricaMay 28, 202715,476 ft25 h
Austria Backyard Ultra - Loosdorf TrailBackyard (4.167-mile yards)Loosdorf, AustriaMay 29, 2027——
Dead Cow Gully Backyard UltraBackyard (4.167-mile yards)Nanango, AustraliaMay 29, 2027——
Blacks Grove Backyard Ultra Presented by Agony of DeFeet Wadena Run ClubBackyard (4.167-mile yards)Wadena, MNMay 29, 2027——
Pedra Grande Ultra Trail Challenge55kmAtibaia, BrazilMay 29, 20279,022 ft12 h
Pedra Grande Ultra Trail Challenge80kmAtibaia, BrazilMay 29, 202712,005 ft18 h
Bunk House Trail Runs50 KMDousman, WIMay 29, 2027—9 h
Blackfoot Ultra100kmCooking Blackfoot Lake, CanadaMay 29, 20274,003 ft14 h
Blackfoot Ultra50kmCooking Blackfoot Lake, CanadaMay 29, 20272,001 ft10 h
Swiss Canyon Trail114kmCouvet, SwitzerlandMay 29, 202717,388 ft28 h
Swiss Canyon Trail166kmCouvet, SwitzerlandMay 29, 202727,894 ft44 h
Swiss Canyon Trail52kmCouvet, SwitzerlandMay 29, 20278,629 ft13 h
Swiss Canyon Trail83kmCouvet, SwitzerlandMay 29, 202711,483 ft27 h
Chesterfield Gorge Ultra100 MilesWest Chesterfield, MAMay 29, 2027—30 h
Chesterfield Gorge Ultra50 KMWest Chesterfield, MAMay 29, 20276,100 ft9 h
Chesterfield Gorge Ultra50 MilesWest Chesterfield, MAMay 29, 20273,750 ft13.5 h
Chesterfield Gorge Ultra100 KMWest Chesterfield, MAMay 29, 2027—19 h
Coldwater In Your VeinsBackyard (4.167-mile yards)North Ogden, UTMay 29, 2027——
Connor's Claims Ultra50 KMStockton, UTMay 29, 20279,500 ft—
Connor's Claims Ultra50 MilesStockton, UTMay 29, 202714,000 ft17.5 h
Durango Trails Backyard UltraBackyard (4.167-mile yards)Durango, COMay 29, 2027——
Echo Valley Runs50 KMChelan, WAMay 29, 20273,900 ft9 h
adidas TERREX MaXi-Race100 kmAnnecy, FranceMay 29, 202717,881 ft24 h
adidas TERREX MaXi-Race56 kmAnnecy, FranceMay 29, 202710,860 ft11 h
La Maxi Race du Lac d'Annecy100kmAnnecy-le-Vieux, FranceMay 29, 202717,388 ft24 h
Trail du Café55kmVieux-Habitants, FranceMay 29, 20279,843 ft16 h
Ultra Traversée du Pilat - Traversée des Chirats80kmCondrieu, FranceMay 29, 202713,123 ft17 h
Beat the Sunset 50km50kmMaidenhead, United KingdomMay 29, 2027771 ft9.2 h
God’s Own Backyard Ultra SpringBackyard (4.167-mile yards)Hawksworth, United KingdomMay 29, 2027——
London 2 Brighton Challenge100kmRichmond, United KingdomMay 29, 20274,921 ft33 h
London 2 Brighton Challenge58 kmRichmond, United KingdomMay 29, 20272,297 ft16 h
London 2 Brighton Challenge75 kmRichmond, United KingdomMay 29, 20271,640 ft18 h
High Hope Endurance Run200 KMGlen Rose, TXMay 29, 20274,296 ft54 h
Hoof It on the Hill32.3 miCherry Creek, NYMay 29, 2027—9 h
Infinitus88 KMRipton, VTMay 29, 20279,700 ft22.5 h
Iron Will Backroads100 MilesEnterprise, KSMay 29, 2027—36 h
Iron Will Backroads 50 km50 KMEnterprise, KSMay 29, 2027——
Iron Will Backroads100 KMEnterprise, KSMay 29, 2027—19 h
Iron Will Backroads50 Miles (Iron Will)Enterprise, KSMay 29, 2027—13.5 h
Tamba 100 Adventure Trail103kmTamba, JapanMay 29, 202713,123 ft43 h
Tamba 100 Adventure Trail175 kmTamba, JapanMay 29, 202738,599 ft57 h
Tamba 100 Adventure Trail50kmTamba, JapanMay 29, 202712,362 ft24 h
GEOJE101 kmgeojesi, South KoreaMay 29, 202716,759 ft28 h
GEOJE62 kmgeojesi, South KoreaMay 29, 202710,791 ft17 h
L.O.S // LAST ONE STANDINGBackyard (4.167-mile yards)SPOKANE, WAMay 29, 2027——
Leavenworth Trail Fest50 KMLeavenworth, WAMay 29, 20277,500 ft10 h
Leavenworth Trail Fest55 KMLeavenworth, WAMay 29, 20277,500 ft10 h
EcoTrail of Oslo50kmOslo, NorwayMay 29, 20273,366 ft9 h
EcoTrail of Oslo80kmOslo, NorwayMay 29, 20276,562 ft30 h
Lofoten Ultra Trail 50 Miles50miVestvågøy, NorwayMay 29, 202713,123 ft16 h
North Fork 50K50KPine, COMay 29, 20273,670 ft13 h
North Fork 50 Mile50 MilePine, COMay 29, 20276,425 ft14 h
Pacifico Ultra50 KMPalmdale, CAMay 29, 20275,317 ft9 h
River's Edge Trail Race50 KMGeorgetown, TXMay 29, 20271,572 ft9 h
St.Petersburg Backyard Ultra 2026Backyard (4.167-mile yards)Gatchina district, RussiaMay 29, 2027——
Smith Rock Classic 50K50 KMTerrebonne, ORMay 29, 20275,000 ft10 h
Smith Rock Classic50 MilesTerrebonne, ORMay 29, 20277,500 ft13.5 h
Spence Mountain Run50 KMKlamath Falls, ORMay 29, 2027—9 h
Sugar Badger 50/50 and half50 KMBelleville, WIMay 29, 2027—13 h
Sugar Badger 50/50 and Half50 MilesBelleville, WIMay 29, 2027—14 h
The Freedom 5050 KMBuckley, WAMay 29, 2027311 ft10 h
The Freedom 5050 MilesBuckley, WAMay 29, 2027947 ft15 h
Twisted Fork Trail Festival42.3 miPark City, UTMay 29, 2027—13 h
West Virginia Trail Fest - 50 km50 KMSnowshoe, WVMay 29, 2027—13 h
West Virginia Trail Fest - 50 km60 KMSnowshoe, WVMay 29, 20276,300 ft13 h
West Virginia Trail Fest100 KMSnowshoe, WVMay 29, 202712,000 ft20 h
Yankee Springs Trail Run50 KMMiddleville, MIMay 29, 2027—9 h
Yankee Springs Trail Run100 KMMiddleville, MIMay 29, 2027—19 h
Ohm Trail - Ultra56 kmAywaille, BelgiumMay 30, 20279,341 ft10 h
Ohm Trail - Ultra80kmAywaille, BelgiumMay 30, 202713,123 ft15 h
Ohm Trail - Ultra84 kmAywaille, BelgiumMay 30, 202713,159 ft16 h
La Maxi Race du Lac d'Annecy - Shokz-Race58kmFaverges, FranceMay 30, 202711,483 ft11 h
Trail des Marcaires65kmMuhlbach-sur-Munster, FranceMay 30, 202710,860 ft13 h
High Hope Endurance Run50 KMGlen Rose, TXMay 30, 20271,074 ft14 h
High Hope Endurance Run100 KMGlen Rose, TXMay 30, 20272,148 ft37 h
Trail Sacred Forests75kmBadia Prataglia (AR), ItalyMay 30, 202713,780 ft17 h
MCW The Tatum Classic50 KMMiddletown Township, NJMay 30, 2027—8 h
Run The Rim50 KMArnold, CAMay 30, 20275,100 ft9 h