Who puts on the race
Organizers
The people and series behind the monuments. Follow an organizer to keep their calendar on your desk.
Last Soul GmbH
Kim Gottwald and rappid’s backyard, built to be watched. No public spectators; 24/7 stream and official live timing.
UTMB World
The Mont-Blanc week and the global trail series. UTMB, CCC, OCC, and Ultra-Trail Cape Town sit on this calendar.
Western States Endurance Run
The oldest 100-mile trail race still running. Olympic Valley to the Placer High track.
Hardrock Hundred
The San Juan 100. High, clockwise or counterclockwise, lottery-tight.
Aravaipa Running
Southwest ultras: Cocodona 250, Javelina Jundred, and the desert calendar.
Life Time Leadville
High-altitude 100-mile run and bike week in the Rockies.
Big's Backyard Ultra
The backyard world championship loop. Lazarus Lake’s farm, last one standing.
Dead Cow Gully
The Queensland backyard that hosted Phil Gore’s 119-yard world record.
Spartathlon
246 km of road from Athens to the statue of Leonidas. Cutoffs that do not negotiate.
Grand Raid / Diagonale des Fous
The Grand Raid on Réunion. Jungle, cirques, and a carnival finish.