Marathon calendar — Americas · August 2027

Aug expectedMexico City MarathonAug expectedNot yet openMEXICO CITYMexico🌤️ 13°₩68,000Entry feeMexico City MarathonGOLDAugust 2027 · expected · Mexico CityMarathon

D-313ASICS Falmouth Road RaceD-313TBDFALMOUTHUnited States🌤️ 14°ASICS Falmouth Road RaceSun, August 15, 2027 · Falmouth, United States

Aug expectedMedio Maratón de SantiagoAug expectedNot yet openSANTIAGOChile🌤️ 15°₩43,000Entry feeMedio Maratón de SantiagoAugust 2027 · expected · Santiago, ChileHalf

D-327Asunción International MarathonD-327OpenCOSTANERA DE ASUNCIÓNParaguay🔥 24°₩44,000Entry feeAsunción International MarathonLABELSun, August 29, 2027 · Costanera de Asunción, ParaguayMarathonHalf

D-305Waldo 100KD-305Not yet openOAKRIDGEUnited States🌤️ 11°Waldo 100KSat, August 7, 2027 · Oakridge, OR, United StatesUltra

D-31328ª Meia Maratona Internacional do Rio de JaneiroD-313TBDRIO DE JANEIROBrazil🔥 23°28ª Meia Maratona Internacional do Rio de JaneiroSun, August 15, 2027 · Rio de Janeiro, Brazil10K5KHalf

D-320New Balance 42k Porto Alegre MarathonD-320OpenPORTO ALEGREBrazil☀️ 19°New Balance 42k Porto Alegre MarathonSun, August 22, 2027 · Porto Alegre, BrazilMarathon

D-327Millennium Meadows MarathonD-327OpenGRAND RAPIDSUnited States🌤️ 10°₩132,000Entry feeMillennium Meadows MarathonSun, August 29, 2027 · Grand Rapids, MI, United StatesMarathonHalf10K

Aug expectedNebraska State Fair MarathonAug expectedTBDGRAND ISLANDUnited States🌤️ 11°₩40,000Entry feeNebraska State Fair MarathonAugust 2027 · expected · Grand Island, NE, United StatesMarathon

Aug expectedPhilmont Trail RaceAug expectedTBDCIMARRONUnited States🧊 8°₩146,000Entry feePhilmont Trail RaceAugust 2027 · expected · Cimarron, NM, United StatesMarathonUltra

Aug expectedBlack Bear Trail RacesAug expectedTBDWATERVILLE VALLEYUnited States🧊 7°₩14,000Entry feeBlack Bear Trail RacesAugust 2027 · expected · Waterville Valley, NH, United StatesUltra

D-305Winter Park 50KD-305OpenWINTER PARKUnited States🔥 23°₩76,000Entry feeWinter Park 50KSat, August 7, 2027 · Winter Park, CO, United StatesUltra

Aug expectedPeaceHealth Appletree MarathonAug expectedTBDVANCOUVERUnited States🌤️ 11°₩151,000Entry feePeaceHealth Appletree MarathonAugust 2027 · expected · Vancouver, WA, United StatesMarathonHalf

Aug expectedRodeo Valley Trail RunAug expectedTBDSAUSILTOUnited States🌤️ 16°Rodeo Valley Trail RunAugust 2027 · expected · Sausilto, CA, United StatesHalfUltra

D-299Panama City MarathonD-299TBDPANAMA CITYPanama🔥 27°₩37,000Entry feePanama City MarathonSun, August 1, 2027 · Panama CityMarathon

D-305Blue Hill Mountain Trail FestD-305Not yet openBLUE HILLUnited States🌤️ 9°Blue Hill Mountain Trail FestSat, August 7, 2027 · Blue Hill, ME, United StatesUltra

Aug expectedMontevideo Half MarathonAug expectedTBDMONTEVIDEOUruguay🌤️ 16°₩43,000Entry feeMontevideo Half MarathonAIMSAugust 2027 · expected · Montevideo, UruguayMarathonHalf10K

Aug expectedServus Edmonton MarathonAug expectedTBDEDMONTONCanada🧊 4°₩99,000Entry feeServus Edmonton MarathonAIMSAugust 2027 · expected · Edmonton, CanadaMarathonHalf10K5K

Aug expectedGuadalajara 10km RunAug expectedTBDGUADALAJARAMexico☀️ 19°₩28,000Entry feeGuadalajara 10km RunAIMSAugust 2027 · expected · Guadalajara, Mexico10K

Aug expectedSkyline 50k Endurance RunAug expectedTBDCASTRO VALLEYUnited States☀️ 16°₩146,000Entry feeSkyline 50k Endurance RunAugust 2027 · expected · Castro Valley, CA, United StatesUltra

D-305The Valentine MarathonD-305OpenVALENTINEUnited States🌤️ 9°₩70,000Entry feeThe Valentine MarathonSat, August 7, 2027 · Valentine, NE, United StatesMarathon

Aug expectedBluegrass Reaper ChallengeAug expectedTBDBEREAUnited States🌤️ 14°₩69,000Entry feeBluegrass Reaper ChallengeAugust 2027 · expected · Berea, KY, United StatesMarathonHalf10KUltra

Aug expected5K RP RUNAug expectedTBDPRAIA GRANDEBrazil☀️ 22°₩35,000Entry fee5K RP RUNAugust 2027 · expected · Praia Grande, Brazil5K

Aug expectedMoorehead Park Trail MazathonAug expectedTBDIDA GROVEUnited States🌤️ 10°₩55,000Entry feeMoorehead Park Trail MazathonAugust 2027 · expected · Ida Grove, IA, United StatesMarathon

D-299Bound for Boston Marathon & Half Marathon - DenverD-299Not yet openDENVERUnited States🌤️ 9°₩104,000Entry feeBound for Boston Marathon & Half Marathon - DenverSun, August 1, 2027 · Denver, CO, United StatesMarathonHalf

Aug expectedFall Adult Full & Half Marathon Training Evening - ApexAug expectedClosedFall Adult Full & Half Marathon Training Evening - ApexAugust 2027 · expected · Apex, NC, United StatesMarathonHalf

Aug expectedExtraterrestrial Full MoonAug expectedTBDRACHELUnited States🌤️ 13°₩69,000Entry feeExtraterrestrial Full MoonAugust 2027 · expected · Rachel, NV, United StatesMarathonHalf10K5KUltra

Aug expectedManta MarathonAug expectedTBDMANTAEcuador₩83,000Entry feeManta MarathonAugust 2027 · expected · Manta, EcuadorMarathonHalf10K

Aug expectedPeak 2 Brew: P2B ADK RelayAug expectedTBDNORTH CREEKUnited States🌤️ 8°₩929,000Entry feePeak 2 Brew: P2B ADK RelayAugust 2027 · expected · North Creek, NY, United StatesUltra

D-3053H Trail Half Marathon + DHRT 50KD-305OpenKING GEORGEUnited States🌤️ 15°₩90,000Entry fee3H Trail Half Marathon + DHRT 50KSat, August 7, 2027 · King George, VA, United StatesHalfUltra

D-305Larrabee LakesD-305Not yet openBELLINGHAMUnited States🌤️ 10°₩100,000Entry feeLarrabee LakesSat, August 7, 2027 · Bellingham, WA, United StatesUltra

Aug expectedElephant Rock Trail RunAug expectedTBDBOUNTIFULUnited States🌤️ 9°₩69,000Entry feeElephant Rock Trail RunAugust 2027 · expected · Bountiful, UT, United StatesUltra

Aug expectedSteel City Human vs HorseAug expectedTBDSteel City Human vs HorseAugust 2027 · expected · Burgettstown, PA, United StatesUltra

Aug expectedVertigo Night RunsAug expectedTBDWADDELLUnited States🔥 24°₩69,000Entry feeVertigo Night RunsAugust 2027 · expected · Waddell, AZ, United StatesUltra

D-305Blazin' Summer SufferfestD-305TBDBlazin' Summer SufferfestSat, August 7, 2027 · Cedar Hill, TX, United StatesUltra

D-305Volcanic 50D-305Not yet openCOUGARUnited States🌤️ 9°Volcanic 50Sat, August 7, 2027 · Cougar, WA, United StatesUltra

Aug expectedLoopy LooperAug expectedTBDPENNSAUKENUnited States🌤️ 14°₩35,000Entry feeLoopy LooperAugust 2027 · expected · Pennsauken, NJ, United StatesUltra

Aug expectedElkhorn RelayAug expectedTBDLA GRANDEUnited States🌤️ 8°Elkhorn RelayAugust 2027 · expected · La Grande, OR, United StatesUltra

Aug expectedIn the Heat of the NightAug expectedTBDANNISTONUnited States☀️ 17°₩90,000Entry feeIn the Heat of the NightAugust 2027 · expected · Anniston, AL, United StatesUltra

Aug expectedHURL ElkhornAug expectedTBDHELENAUnited StatesHURL ElkhornAugust 2027 · expected · Helena, MT, United StatesUltra

Aug expectedSkyline Mountain Half, Marathon, 55KAug expectedTBDEDENUnited States🧊 8°Skyline Mountain Half, Marathon, 55KAugust 2027 · expected · Eden, UT, United StatesUltra

Aug expectedThunder Mountain Trail ChallengeAug expectedTBDKIT CARSONUnited States🌤️ 9°₩104,000Entry feeThunder Mountain Trail ChallengeAugust 2027 · expected · Kit Carson, CA, United StatesUltra

Aug expectedUnder the MoonAug expectedTBDHILOUnited States🔥 22°₩42,000Entry feeUnder the MoonAugust 2027 · expected · Hilo, HI, United StatesUltra

Aug expectedProspector's 50k | 30kAug expectedTBDCOOKE CITYUnited States🥶 -1°₩187,000Entry feeProspector's 50k | 30kAugust 2027 · expected · Cooke City, MT, United StatesUltra

Aug expected4th Annual Swift Bear Trail RunAug expectedTBDHAYSUnited States🧊 7°₩28,000Entry fee4th Annual Swift Bear Trail RunAugust 2027 · expected · Hays, MT, United StatesUltra

Aug expectedHaulin AspenAug expectedTBDBENDUnited States🌤️ 8°₩104,000Entry feeHaulin AspenAugust 2027 · expected · Bend, OR, United StatesMarathonHalf

Aug expectedCrystal Lake Team MarathonAug expectedTBDCrystal Lake Team MarathonAugust 2027 · expected · Beulah, MI, United StatesMarathon

D-305Eddy Trail RacesD-305OpenANNANDALEUnited States🧊 7°₩83,000Entry feeEddy Trail RacesSat, August 7, 2027 · Annandale, MN, United StatesHalfUltra

Aug expectedHood HundredAug expectedTBDMT. HOODUnited States🌤️ 9°Hood HundredAugust 2027 · expected · Mt. Hood, OR, United StatesUltra

D-305El Vaquero LocoD-305OpenEl Vaquero LocoSat, August 7, 2027 · Afton, WY, United StatesUltra

Aug expectedSundown Rundown - Summer EditionAug expectedTBDSundown Rundown - Summer EditionAugust 2027 · expected · Kempton, PA, United StatesMarathon

Aug expectedFifth Street Cross Summer CampAug expectedTBDFifth Street Cross Summer CampAugust 2027 · expected · Kempton, PA, United StatesMarathon

Aug expectedDeath by 5k OregonAug expectedTBDDEXTERUnited States🌤️ 11°₩229,000Entry feeDeath by 5k OregonAugust 2027 · expected · Dexter, OR, United StatesUltra

Aug expectedWARRIOR RUSH 5K - 10K - Half 13.1 - Full Marathon 26.2 (Milwaukee)Aug expectedTBDSHOREWOODUnited States🌤️ 10°₩68,000Entry feeWARRIOR RUSH 5K - 10K - Half 13.1 - Full Marathon 26.2 (Milwaukee)August 2027 · expected · Shorewood, WI, United StatesMarathonHalf10K5K

Aug expectedThe Next Loop Endurance Series - Indian Camp CreekAug expectedTBDThe Next Loop Endurance Series - Indian Camp CreekAugust 2027 · expected · Foristell, MO, United StatesUltra

Aug expectedTrail of the Dragon 50K/50mile RunAug expectedTBDIDA GROVEUnited States🌤️ 10°₩97,000Entry feeTrail of the Dragon 50K/50mile RunAugust 2027 · expected · Ida Grove, IA, United StatesUltra

Aug expectedCougar Mountain Trail Run Series (August)Aug expectedTBDBELLEVUEUnited States🌤️ 11°₩55,000Entry feeCougar Mountain Trail Run Series (August)August 2027 · expected · Bellevue, WA, United StatesMarathon5K

Aug expectedNewbsanity Extreme Ravine Trail RaceAug expectedTBDBINGHAMTONUnited States🌤️ 10°₩49,000Entry feeNewbsanity Extreme Ravine Trail RaceAugust 2027 · expected · Binghamton, NY, United States5KUltra

D-305Sheep Mountain Trail RunsD-305Not yet openFAIRPLAYUnited States🧊 0°₩139,000Entry feeSheep Mountain Trail RunsSat, August 7, 2027 · Fairplay, CO, United StatesUltra

Aug expectedThe Guardian MileAug expectedTBDCLEVELANDUnited States🌤️ 13°The Guardian MileAugust 2027 · expected · Cleveland, United States

Dates and entry details follow each race's official announcement and may change — re-check on the official page before entering. 8 races on this page are open for entry right now.