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100-mile trail races 2026: calendar, courses & results

100-mile: 8 upcoming trail races. Every race links to its course profile, terrain breakdown and results. Full calendar

RaceDateLocationDistanceD+
Ultra-Trail Mount Yun by UTMB · UMY 100MOctober 16, 2026Zhonghe Square, Mount Yun, Linfen, Shanxi, China166km7416m+
Kullamannen by UTMB · Kullamannen 100 MilesOctober 30, 2026Sweden160km—
Ultra-Trail Kosciuszko by UTMB · KosciMilerNovember 26, 2026Australia161km—
HOKA Chiang Mai Thailand by UTMB · Chiang Dao 160November 28, 2026Thailand168km—
Oman by UTMB · Hajar UltraDecember 10, 2026Al Hamra, Oman154km8000m+
Tarawera Ultra-Trail by UTMB · Tarawera 100MFebruary 13, 2027New Zealand161km—
Chianti Ultra Trail by UTMB · Ultra Trail Chianti CastlesMarch 18, 2027Italy160km—
Istria 100 by UTMB · Istria 100 by UTMB® 168KApril 2, 2027Labin, Croatia168km6800m+

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GPX AnalyzerUpload any GPX and see the elevation profile, climbs, descents and terrain mix.Race Pace CalculatorFinish time, checkpoint splits and fueling from the real course profile.Trail FinderExplore trail gradients on the map and build a loop from any point.Trail Race CalendarUpcoming trail races by country and distance, with course data.Terrain ChallengesCompare your terrain to the world's hardest courses.
Trail races by countryItaly·Spain·Serbia·United States·Slovenia·Croatia
By distance50K·50-mile·100K