High Lonesome 100

Lottery + qualifier

Mount Princeton (Buena Vista/Nathrop), CO · 100 mi

Lottery window

Dates TBD

Requires a qualifying finish; applications open for roughly one week in late December/early January, with a live, randomized (dice-seeded) drawing streamed publicly in mid-January, tickets weighted by past unsuccessful applications, finish history, and trail-work hours

Estimated — verify before relying on it

Key info

Official website

100 miles

Lottery with qualifier

A rugged 100-mile trail race through Colorado's Sawatch and Mosquito ranges near Buena Vista, with over 25,000 feet of elevation gain.

Go to official application page

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Exact dates, the official application link, and calendar sync are free once you create an account — no credit card required.

My status

Must have finished a 50-mile/100K trail race (prior calendar year) or a 100+ mile trail race within the prior ~3 years, or reached a specified checkpoint at a prior High Lonesome 100, or finished the Sawatch 50/50.

Race Agent is an independent, unofficial tracker and is not affiliated with High Lonesome 100 or its organizers. Registration dates change without notice — always verify on the official race site before relying on this information.