Leadville Trail 100 Run
Leadville Trail 100 Run is a high-altitude Colorado out-and-back from Leadville, crossing Hope Pass and topping out near 12,500 feet in thin air.
Marathon Scout prioritizes official race websites, registration pages, timing providers, results pages, and race-linked live tracking. Last updated July 16, 2026.
Leadville Trail 100 Run quick facts
- High-altitude 100-mile out-and-back from Leadville.
- Course reaches about 12,500 feet and includes more than 15,000 feet of climbing.
- Lottery and qualification details are handled through Leadville Race Series rules.
- Altitude, Hope Pass, and overnight pacing shape race plans.
About the Leadville Trail 100 Run
The Leadville Trail 100 Run is the running centerpiece of the Leadville Race Series. Its altitude, Hope Pass crossing, and lottery-driven entry make mountain preparation as important as raw distance.
Leadville Trail 100 Run course description
The out-and-back course starts and finishes in Leadville and uses sections including Powerline, Sugarloaf, the Colorado Trail, and Hope Pass. The race lists more than 15,000 feet of climbing and reaches about 12,500 feet.
Weather for the Leadville Trail 100 Run
August in the Colorado high country can bring cool starts, intense sun, afternoon storms, and cold night miles. Altitude and Hope Pass weather are as important as the total distance.
Past Leadville Trail 100 Run dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Saturday, August 22, 2026 | — | — |
| 2025 | Saturday, August 16, 2025 | Completed | Open results |
| 2024 | Saturday, August 17, 2024 | Completed | Open results |
Leadville Trail 100 Run FAQ
When is the Leadville Trail 100 Run?
The 2026 Leadville Trail 100 Run is on Saturday, August 22, 2026.
How do I register for the Leadville Trail 100 Run?
You can register for the Leadville Trail 100 Run at leadvilleraceseries.com.
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