For The RepsBlog
SearchGet the app

Races

Leadville Trail 100 Run

A 100-mile trail race in Leadville, Colorado. The whole course is above about 2,800 m (9,200 ft), so the altitude is as much of a challenge as the distance.

For The Reps · Updated

Woman descending a scree slope in an alpine trail race
Woman descending a scree slope in an alpine trail race. AI-generated image.
Type
Trail race
Where
Leadville, Colorado
Level
Experienced ultrarunners

Race dates

The date for the next edition is not published yet.

The 2026 race was on Saturday, August 22, 2026.

Dates change, so check the official site before you enter or book travel. Last checked June 3, 2026.

About the race

Best for experienced ultrarunners.

Training for it

Trail races reward time on your feet and climbing more than road speed. Train on terrain like the course.

  • Build your long runs by time rather than distance.
  • Practise hiking the steep climbs and running the descents.
  • Check the mandatory kit list early and train with that kit on.