Ultramarathons

100K races

100Ks, plus races a little shorter or longer, from 95 to 115 kilometers. Each race shows its own official distance. 42 races. Next up: Ultra-Trail Cape Town UT100 on Saturday, November 21, 2026.

November 2026

Ultra-Trail Cape Town UT100

Cape Town, South Africa100KEntry closed

December 2026

Jackson County Ultras 100K

Brownstown, Indiana100KEntry open

January 2027

Bandera 100K

Bandera, Texas100KEntry open

Vietnam Highlands Trail by UTMB LangBiang 100K

Da Lat, Vietnam100K

Hong Kong 100

Hong Kong, Hong Kong100KEntry closed

February 2027

Black Canyon 100K

Mayer, Arizona100KWaitlist open

Tarawera Ultra-Trail T102

Rotorua, New Zealand102KEntry open

March 2027

Crazy Desert Trail Race 100K

San Angelo, Texas100KEntry open

April 2027

Tenerife Bluetrail by UTMB 110K

Los Cristianos, Spain110KSold out

Lake Sonoma 100K

Geyserville, California100K

Canyons 100K

Auburn, California100KEntry open

German 100K Road Championships

Berlin, Germany100KEntry open

MIUT Legend

Porto Moniz, Portugal110KLottery open

May 2027

Miwok 100K

Stinson Beach, California100KLimited entry

Traverse City Trail Running Festival 100K

Traverse City, Michigan100KEntry open

Ultra-Trail Australia UTA100

Katoomba, Australia100KLimited entry

Ohrid Ultra-Trail 105K

North Macedonia105KEntry open

June 2027

MoMoFo 100K

Martinsville, Indiana100KEntry open

London 100K

London, United Kingdom100KEntry open

Trail 100 Andorra by UTMB Ultra 105K

Ordino, Andorra105KEntry open

Ultra Trail Whistler by UTMB 100K

Whistler, Canada100KEntry open

July 2027

Eiger Ultra Trail E101

Grindelwald, Switzerland101K

Beacons Way Ultra 100K

Llangynidr, United Kingdom100KEntry open

Never Summer 100K

Gould, Colorado100K

August 2027

Waldo 100K

Oakridge, Oregon100K

Twisted Branch Trail Run 100K

Naples, New York100K

CCC

Courmayeur, Italy108KProjected date

Green Lakes Endurance Runs 100K

Fayetteville, New York100KProjected date

September 2027

Malaysia Ultra-Trail by UTMB MY100

Taiping, Malaysia100KEntry open

Wild 110

Crans-Montana, Switzerland110K

Kaçkar by UTMB 100K

Ayder, Türkiye100K

Ultra X England 110K Single Stage

Edale, United Kingdom110KEntry open

October 2027

Cuyamaca 100K

Julian, California100K

Ultra Pirineu 100K

Bagà, Spain100K

Blackall 100K

Mapleton, Australia100K2026 results

Date not announced

TransLantau100 by UTMB

Mui Wo, Hong Kong100K2026 results

Ultra-Trail Shudao by UTMB DSD 100K

Guangyuan, China100K2026 results

IAU 100 km World Championships

Ames, Spain100K

Tango 100km Ultramarathon

Kyotango, Japan100K

Paris Texas Marathon 100K

Paris, Texas100K

Peak District Challenge Gold Ultra 100K

Hathersage, United Kingdom100K

JD Ultra-Trail Great Wall by UTMB DGW100

Zhangjiakou, China100K

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