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Ultramarathons in August

The 217 ultramarathons that run in August, 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
Badger Trail Races by Ten Junk Miles Racing50 KMBelleville, WIAug 1, 20271,400 ft11 h
Badger Trail Races by Ten Junk Miles Racing50 MilesBelleville, WIAug 1, 20272,200 ft12 h
Ragged 75 Stage Race and 50k50 KMDanbury, NHAug 1, 20276,300 ft12 h
Skyline 50K50 KMSan Leandro, CAAug 1, 20274,810 ft9 h
Salt and Sulfur 420420 MilesSalt Lake City, UTAug 4, 2027—264 h
KAT100 - Marathon Trail100 MilesFieberbrunn, AustriaAug 5, 202729,528 ft45 h
KAT100 - Marathon Trail173kmFieberbrunn, AustriaAug 5, 202732,480 ft48 h
KAT100 - Marathon Trail51kmFieberbrunn, AustriaAug 5, 202710,663 ft12 h
KAT100 - Marathon Trail74kmFieberbrunn, AustriaAug 5, 202713,451 ft21 h
Birdy's Backyard UltraBackyard (4.167-mile yards)Moodiarrup, AustraliaAug 6, 2027——
Capes162kmMabou, CanadaAug 6, 202719,685 ft36 h
Capes86kmMabou, CanadaAug 6, 202711,155 ft22 h
Fatdog 120103 kmCathedral Provincial Park, CanadaAug 6, 202712,618 ft26 h
Fatdog 120199 kmCathedral Provincial Park, CanadaAug 6, 202728,602 ft48 h
Fatdog 12061 kmCathedral Provincial Park, CanadaAug 6, 20277,756 ft18 h
Fatdog 12084 kmCathedral Provincial Park, CanadaAug 6, 202710,820 ft20 h
HighFive100100 MilesLake City, COAug 6, 202740,000 ft48 h
Wyoming Range 100-Mile Endurance Run100 MilesBondurant, WYAug 6, 202724,000 ft48 h
Migrant Trail Race, Fushë Arrëz57 kmFushe-Arrez, AlbaniaAug 7, 20277,247 ft15 h
Migrant Trail Race, Fushë Arrëz97 kmFushe-Arrez, AlbaniaAug 7, 202711,322 ft20 h
Berry Long Run70kmBlackwood, AustraliaAug 7, 20273,281 ft12 h
Red's Backyard UltraBackyard (4.167-mile yards)Kembla Grange, AustraliaAug 7, 2027——
Blazin' Summer Sufferfest 54 km Race54 KMCedar Hill, TXAug 7, 20272,400 ft11 h
Blue Hill Mountain Trail Fest50 KMBlue Hill, MEAug 7, 2027950 ft10 h
Fat Dog 40 Mile Trail Race100kmManning Park, CanadaAug 7, 202713,304 ft26 h
Fat Dog 40 Mile Trail Race120miManning Park, CanadaAug 7, 202728,451 ft48 h
Fat Dog 40 Mile Trail Race40miManning Park, CanadaAug 7, 20279,160 ft18 h
Fat Dog 40 Mile Trail Race50miManning Park, CanadaAug 7, 202710,732 ft20 h
Capt'n Karl's Reveille Ranch60 KMBurnet, TXAug 7, 2027—10.5 h
Swiss Alps 100100kmFiesch VS, SwitzerlandAug 7, 202720,505 ft27 h
Swiss Alps 100160kmFiesch VS, SwitzerlandAug 7, 202733,301 ft50 h
Swiss Alps 10050kmFiesch VS, SwitzerlandAug 7, 202710,531 ft15 h
Crystal Springs Ultra Races38.4 miWytheville, VAAug 7, 20276,000 ft12 h
Dahlgren Heritage Rail Trail 50K50 KMKing George, VAAug 7, 2027—8 h
Eastern States 100100 MilesWaterville, PAAug 7, 202721,000 ft30 h
Eddy Trail Races50 KMAnnandale, MNAug 7, 2027—9 h
Elephant Rock Trail Run 50K50KBountiful, UTAug 7, 20273,045 ft13 h
Brecon Beacons 51km51kmTalybont-on-Usk, United KingdomAug 7, 20277,021 ft12 h
In the Heat of the Night50 KMAnniston, ALAug 7, 20273,950 ft9 h
In the Heat of the Night100 KMAnniston, ALAug 7, 2027596 ft19 h
Kat'cina Mosa 100K Mountain Run100 KMSpringville, UTAug 7, 202715,000 ft23.5 h
Larrabee Lakes50 KMBellingham, WAAug 7, 20276,500 ft9 h
Murderkill Ultramarathons50 KMFelton, DEAug 7, 2027—9 h
Murderkill Ultramarathons50 MilesFelton, DEAug 7, 2027—12 h
Old Fort Fifty50 KMOld Fort, NCAug 7, 20274,874 ft10.5 h
Prospector's 50K50 KMCooke City, MTAug 7, 2027—9 h
Bunketorp Backyard Ultra TrailBackyard (4.167-mile yards)Bunketorp, SwedenAug 7, 2027——
Skyline Mountain 55K55KEden, UTAug 7, 20277,000 ft13 h
Sufferfest on Section 450 KMMiddleburg, FLAug 7, 2027——
Tahqua Trail Run50 KMParadise, MIAug 7, 20272,490 ft9 h
The Nifty Fifty50 KMJuneau, AKAug 7, 20275,000 ft7.5 h
The Valentine Marathon52 KMValentine, NEAug 7, 2027—7 h
UTE 100100 MileLa Sal, UTAug 7, 202723,356 ft41 h
UTE 50K50KLa Sal, UTAug 7, 202711,015 ft18 h
UTE 50 Mile50 MileLa Sal, UTAug 7, 202712,175 ft25 h
Vertigo Night Runs52 KMWaddell, AZAug 7, 20272,550 ft10 h
Winter Park 50K50 KMWinter Park, COAug 7, 20274,370 ft12.5 h
Buckeye Ultra100 MilesWellsville, OHAug 12, 20272,600 ft36 h
Buckeye Ultra 200 Mile203 MilesWellsville, OHAug 12, 20275,000 ft96 h
Buckeye Ultra Road Race100 MilesAshtabula, OHAug 12, 2027—30 h
Buckeye Ultra 200 Mile Road Race203 MilesAshtabula, OHAug 12, 20276,000 ft72 h
The Clint Eastwood Backyard UltraBackyard (4.167-mile yards)Rocklea, AustraliaAug 13, 2027——
Bigfoot 200 Endurance Run200 MilesCougar, WAAug 13, 202743,100 ft107 h
Last Soul Ultra 2.0Backyard (4.167-mile yards)Bornheim, GermanyAug 13, 2027——
Challenge du Montcalm109 kmAuzat, FranceAug 13, 202737,730 ft55 h
Challenge du Montcalm53 kmAuzat, FranceAug 13, 202718,701 ft15 h
Challenge du Montcalm66 kmAuzat, FranceAug 13, 202724,278 ft30 h
Challenge du Montcalm70 kmAuzat, FranceAug 13, 202722,310 ft32 h
Challenge du Montcalm84 kmAuzat, FranceAug 13, 202730,676 ft52 h
Jigger Johnson 50M 100M100 MilesWaterville valley, NHAug 13, 202729,000 ft50 h
Jigger Johnson 50M/100K/100M100 KMWaterville valley, NHAug 13, 202720,000 ft—
San Juan Softie 100100 MilesDurango, COAug 13, 202720,000 ft38 h
40/50 Mile Challenge, Busse Woods, IL40 MilesElk Grove Village, ILAug 14, 2027—12 h
Almaden Hills Trail Run - Summer50 KMSan Jose, CAAug 14, 20278,200 ft9 h
Baby Dragon100 MilesBlairsville, GAAug 14, 202726,000 ft50 h
Baby Dragon40 MilesBlairsville, GAAug 14, 202713,000 ft22 h
Baby Dragon100 KMBlairsville, GAAug 14, 2027—30 h
BAD DAWG Ultra Endurance Run100 MilesDixon, MOAug 14, 20275,000 ft32 h
BAD DAWG 50 km Ultra Endurance Run50 KMDixon, MOAug 14, 20271,500 ft13.5 h
BAD DAWG Ultra Endurance Run50 MilesDixon, MOAug 14, 20272,500 ft13.5 h
BAD DAWG Ultra Endurance Run100 KMDixon, MOAug 14, 20273,000 ft30.5 h
Beast of Burden - Summer100 MilesLockport, NYAug 14, 20271,200 ft30 h
Beast of Burden - Summer50 MilesLockport, NYAug 14, 2027600 ft24 h
Black Copperhead Sting 50K50 KMBelmont, NCAug 14, 20272,700 ft10 h
Bulldog 50K Ultra Run & 25K Trail Run50 KMCalabasas, CAAug 14, 20275,572 ft9 h
Bulldog Ultra Run & 25K Trail Run75 KMCalabasas, CAAug 14, 20278,358 ft10 h
Boréalys Mont-Tremblant by UTMB - Odyssée78.9kmMont-Tremblant, CanadaAug 14, 202711,929 ft41 h
Swiss Irontrail T7855kmSavognin, SwitzerlandAug 14, 202713,780 ft16 h
Swiss Irontrail T7878kmSavognin, SwitzerlandAug 14, 202716,391 ft21 h
Cloudcroft Ultra Run53 KMCloudcroft, NMAug 14, 20274,900 ft12 h
Cosmic Solstice47 MilesFlagstaff, AZAug 14, 2027—13 h
Charity Mega Run Bingen52kmBingen am Rhein, GermanyAug 14, 202733 ft8 h
Mauerweglauf 100 Meilen Berlin100miBerlin, GermanyAug 14, 20273,281 ft30 h
Fabulous Fahnestock Trail Races50 KMCold Spring, NYAug 14, 20275,200 ft12 h
Fiesta Night Run50 KMSan Antonio, TXAug 14, 2027900 ft10 h
Foxton Hound Ultra104kmMarket Harborough, United KingdomAug 14, 20273,412 ft18 h
Foxton Hound Ultra50kmMarket Harborough, United KingdomAug 14, 20271,509 ft9 h
SkyRun Eryri®55 kmAber Falls, United KingdomAug 14, 202712,795 ft16 h
Speyside Way Ultra100kmAberlour, United KingdomAug 14, 20274,081 ft18 h
Speyside Way Ultra50kmAberlour, United KingdomAug 14, 20271,499 ft10 h
Harriman Park 50k50 KMIsland Park, IDAug 14, 20272,000 ft9 h
Jigger Johnson 50M/100K/100M50 MilesWaterville valley, NHAug 14, 2027—30 h
Marquette Trail 50 km50 KMMarquette, MIAug 14, 20273,237 ft12 h
Marquette Trail50 MilesMarquette, MIAug 14, 20275,520 ft15 h
MD Heat Trail Race50 KMElkridge, MDAug 14, 20273,700 ft10 h
Mid Mountain 50K50 KMPark City, UTAug 14, 20273,360 ft9 h
MOCO Trails Wild West Backyard UltraBackyard (4.167-mile yards)Craig, COAug 14, 2027——
Mountain Madness (Ashley 50)50 MilesVernal, UTAug 14, 2027—10.5 h
Next Loop Endurance Series - Busse Woods IL50 KMElk Grove Village, ILAug 14, 2027—9 h
Olympic Mountains Trail Races50 KMQuilcene, WAAug 14, 20278,873 ft12 h
Olympic Mountains Trail Races100 KMQuilcene, WAAug 14, 202714,200 ft21 h
Redwood Summer Trail Run50 KMOakland, CAAug 14, 20273,500 ft9 h
Roxborough Ultras50 KMLittleton, COAug 14, 20274,180 ft10 h
Roxborough Ultras50 MilesLittleton, COAug 14, 20278,450 ft16 h
Sierra Prieta50 KMPrescott, AZAug 14, 20274,500 ft12 h
Southern Fried 50 km Race50 KMColumbus, GAAug 14, 20271,350 ft10 h
Southern Fried Race50 MilesColumbus, GAAug 14, 20272,100 ft14 h
Tamalpa Headlands 50K50 KMSausalito, CAAug 14, 20276,309 ft10 h
TARC Summer Classic50 KMMedfield, MAAug 14, 2027—11 h
TARC Summer Classic40 MilesMedfield, MAAug 14, 2027—11 h
Tartarus Backyard UltraBackyard (4.167-mile yards)Spokane, WAAug 14, 2027225 ft—
Trystan's Backyard UltraBackyard (4.167-mile yards)Prairie du Chien, WIAug 14, 2027350 ft—
Underdown Trail Races60 KMMerrill, WIAug 14, 20273,600 ft10.5 h
Westminster Trail Races50 KMWestminster, COAug 14, 20272,358 ft9 h
White Pine 50 Mile Backcountry Run50 MilesGarden City, UTAug 14, 20279,000 ft18.5 h
Wy'east Trailfest50 KMGovernment Camp, ORAug 14, 20276,900 ft—
Wy'east Trailfest50 MilesGovernment Camp, ORAug 14, 202710,650 ft—
Another Dam 50K Run50 KMEnglewood, OHAug 15, 20272,000 ft9 h
La Garita 200200 MilesSouth Fork, COAug 18, 2027—86.5 h
Grand Raid des Pyrénées - Tour du Bastan53kmPla d'Adet, FranceAug 19, 202710,072 ft15.5 h
Grand Raid des Pyrénées - Tour des Cirques124kmPiau-Engaly, FranceAug 20, 202723,159 ft41 h
Oregon 200200 MilesOakridge, ORAug 20, 202723,000 ft100 h
Run-de-Vous100 MilesSan Martin, CAAug 20, 2027—30 h
40/50 Mile Challenge, Cliff Cave St. Louis40 MilesSt. Louis, MOAug 21, 2027—12 h
Firebird Trail Races50 KMWindham, MEAug 21, 20273,900 ft9 h
Run the Borders109kmMelrose, United KingdomAug 21, 20276,234 ft20 h
Run the Borders50kmMelrose, United KingdomAug 21, 20271,706 ft10 h
Summer Green Man Ultra 4545miBristol, United KingdomAug 21, 20273,100 ft12 h
Green Lakes Endurance Runs50 KMFayetteville, NYAug 21, 20272,250 ft14 h
Green Lakes Endurance Runs100 KMFayetteville, NYAug 21, 20274,500 ft15 h
H9 Dragon50 MilesBlairsville, GAAug 21, 202712,000 ft19.5 h
Habanero Hundred100 MilesCat Spring, TXAug 21, 20273,500 ft30 h
Habanero Hundred135 MilesCat Spring, TXAug 21, 20274,725 ft48 h
Habanero Hundred 50 km50 KMCat Spring, TXAug 21, 20271,085 ft30 h
Habanero Hundred100 KMCat Spring, TXAug 21, 20272,170 ft30 h
Trail del Sardone64 kmVillaggio del Pescatore, ItalyAug 21, 20276,440 ft19 h
Kachess Ridge 5050 KMCle Elum, WAAug 21, 20276,500 ft13 h
Kachess Ridge 5050 MilesCle Elum, WAAug 21, 202712,000 ft15 h
Leadville Trail 100 Run100 MileLeadville, COAug 21, 202715,492 ft30 h
Moebius - Green, Monster Trail50 KMAurora, OHAug 21, 2027—9 h
EcoTrail Trondheim,50kmTrondheim, NorwayAug 21, 20273,576 ft11 h
EcoTrail Trondheim,80kmTrondheim, NorwayAug 21, 20276,690 ft14.5 h
Tromsø Mountain Challenge Ultra50kmTromsø, NorwayAug 21, 20275,249 ft9 h
Oregon Cascades 100100 MilesSisters, ORAug 21, 202710,900 ft32 h
Oregon Cascades 10050 MilesSisters, ORAug 21, 2027—16 h
Rio Grande 100100 MilesSouth Fork, COAug 21, 2027—38.5 h
Backyard Ultra IstraBackyard (4.167-mile yards)Moscow, RussiaAug 21, 2027——
Shawnee Hills Trail Races100 MilesOzark, ILAug 21, 20279,600 ft33 h
Shawnee Hills Trail Races50 KMOzark, ILAug 21, 20273,200 ft32 h
Shawnee Hills Trail Races100 KMOzark, ILAug 21, 20276,400 ft32 h
Telluride Mountain Run 40 Mile40 MileTelluride, COAug 21, 202715,000 ft17 h
Telluride Mountain Run 65 Mile65 MileTelluride, COAug 21, 202722,500 ft32 h
Trail Run at Sly Park - Summer50 KMPollock Pines, CAAug 21, 20275,000 ft9 h
Twisted Branch Trail Run100 KMNaples, NYAug 21, 20279,783 ft20 h
Wild Turkey Trail Runs50 KMFairmont, WVAug 21, 20275,400 ft11.5 h
Wild Turkey Trail Runs50 MilesFairmont, WVAug 21, 20278,800 ft—
Winona Forest Backyard UltraBackyard (4.167-mile yards)Mannsville, NYAug 21, 2027——
Zero Dark Ultra50 KMSpokane, WAAug 21, 2027—9 h
Les Cretes Vosgiennes - le Cinquante50kmOrbey, FranceAug 22, 20275,577 ft8.75 h
Gravel Worlds Land Ho Run50 KMLincoln, NEAug 22, 20272,000 ft9 h
Thacher Park Trail Running Festival50 KMVoorheesville, NYAug 22, 20272,200 ft6.5 h
Sur les Traces des Ducs de Savoie (TDS)153kmCourmayeur, ItalyAug 23, 202731,168 ft44.92 h
Old Ephraim 200200 MileLogan, UTAug 23, 202741,000 ft110 h
Orsières-Champex-Chamonix (OCC)57kmOrsieres, SwitzerlandAug 26, 202711,483 ft14.5 h
Ultra Trail Tour du Mont Blanc (UTMB)174kmChamonix, FranceAug 27, 202732,480 ft45 h
Courmayeur-Champex-Chamonix (CCC)101kmCourmayeur, ItalyAug 27, 202719,849 ft30 h
Run-de-Vous50 KMSan Martin, CAAug 27, 2027—9 h
Run-de-Vous50 MilesSan Martin, CAAug 27, 2027—13.5 h
Run-de-Vous100 KMSan Martin, CAAug 27, 2027—19 h
40/50 Mile Challenge, Half Day Forest Preserve IL40 MilesVernon Hills, ILAug 28, 20271,400 ft12 h
40/50 Mile Challenge, Half Day Forest Preserve IL50 MilesVernon Hills, ILAug 28, 20271,800 ft12 h
Karwendellauf 52 km Scharnitz-Pertisau52kmScharnitz, AustriaAug 28, 20277,484 ft14 h
Coastal High 5050kmBeechmont, AustraliaAug 28, 20276,562 ft10 h
Backcountry Rise Trail Run50 KMToutle, WAAug 28, 20278,100 ft11 h
Baker Trail 50 Mile UltraChallenge50 MilesButler, PAAug 28, 20277,914 ft14 h
Black Bear Ultra Trail50 KMWaterville Valley, NHAug 28, 20277,700 ft12 h
Bluegrass Reaper Challenge50 KMBerea, KYAug 28, 20271,680 ft—
Continental Divide Trail Run 50K50KSteamboat Springs, COAug 28, 20275,500 ft9 h
Panoramalauf rund um die Burg Are54kmAltenahr, GermanyAug 28, 20276,234 ft9.5 h
Panoramalauf rund um die Burg Are57kmAltenahr, GermanyAug 28, 20276,562 ft10.5 h
Death by 5k Brandon, MS50 KMBrandon, MSAug 28, 2027—9 h
Dirty Dozen 50K50 KMNew York, NYAug 28, 20273,600 ft8 h
Bornholm Backyard UltraBackyard (4.167-mile yards)Klemensker, DenmarkAug 28, 2027——
Highland Fling Race53miMilngavie/Glasgow, United KingdomAug 28, 20277,546 ft15 h
London Backyard UltraBackyard (4.167-mile yards)Croydon, United KingdomAug 28, 2027——
The Devon & Cornwall Backyard UltraBackyard (4.167-mile yards)Plymouth, United KingdomAug 28, 2027——
Hell Creek Half & 50k50 KMSylvan Grove, KSAug 28, 20273,000 ft9 h
Leaky Hourglass UltraBackyard (4.167-mile yards)Half Way, MOAug 28, 2027——
Midwest States 50100 MilesWestboro, WIAug 28, 20275,984 ft34.5 h
Midwest States 5050 KMWestboro, WIAug 28, 20272,800 ft17.5 h
Midwest States 50100 KMWestboro, WIAug 28, 20274,782 ft28 h
Millersylvania 50k50 KMOlympia, WAAug 28, 2027500 ft9 h
Backyard ÅsBackyard (4.167-mile yards)Ås, NorwayAug 28, 2027——
Ocean State Ultra100 MilesWest Greenwich, RIAug 28, 20273,970 ft30 h
Race the North Face Brandon Hills50 KMBrandon, MBAug 28, 20273,937 ft10 h
Rock Hawk50 KMCastle Rock, COAug 28, 20273,325 ft9 h
Salt Springs Field Forest & Falls50 KMFranklin Forks, PAAug 28, 20277,000 ft11.5 h
ScoCo5050 KMLong Grove, IAAug 28, 20272,500 ft8 h
The Next Loop: Endurance Series - Half Day Forest Preserve, Il50 KMVernon Hills, ILAug 28, 2027—11 h
The North Country Run50 KMGrand Rapids, MIAug 28, 20274,845 ft9.5 h
The North Country Run50 MilesGrand Rapids, MIAug 28, 20276,968 ft14 h
The Ring71 MilesFort Valley, VAAug 28, 2027——
Victory Lane Backyard 12Backyard (4.167-mile yards)Bussey, IAAug 28, 2027——
Wiley Canyon Ultra35 MilesLexington, NEAug 28, 2027—10 h
Zombie Backyard UltraBackyard (4.167-mile yards)Pelham, ALAug 28, 2027500 ft—
Wonderland Run50kmHalls Gap, AustraliaAug 29, 20275,249 ft11 h
Five Fields Farm Races50 KMBridgton, MEAug 29, 20273,900 ft9 h