Ultra Running Hub
Races, results and training for ultra runners.
Browse by Grit
One number, 1 to 10, built from distance and climbing. Not a rating of the race — a measure of what the course asks of you.
Grit is scored for 643 of 1,806 races. The rest are missing a climb, not flat.
Quantify your grit
Input your recent training volume to calculate your athlete grit score and find races that match your current fitness level.
Latest Articles
All articles →Upcoming Ultras: 16 Races to Watch in the Next 30 Days
16 standout ultramarathons in the next 30 days — headlined by Sörmlands 100 - 100mi on Sep 11.
Conquer the Catedrais 70km: Your Base Building Plan
This blog post outlines a base-building plan for the 70km Desafio Das Catedrais trail race.
100km Ultra Maratona Campos Gerais: Build Your Base
Build a strong aerobic foundation and core strength through consistent, easy runs and dedicated strength training. Focus on durability and resilience for the Ultra Maratona Campos Gerais 100km.
Featured Races
View all races →NJ One Day 12 Hour Race
Augusta, NJ, USA
NJ One Day 50 km Race
Augusta, NJ, USA
NJ One Day 6 Hour Race
Augusta, NJ, USA
UTLMonteux Ultra Tour du Lac de Monteux Backyard Ultra
Monteux, FRA
Backyard Ultra Isle of Man
Peel, GBR
Beaudry Fall Classic 12 Hour Race
Winnipeg, MB, CAN