Colorado's flattest 50K, built for fast times and lake views
Other trail races within 49 miles
The Barr Lake Trail Race 50K is one of Colorado's flattest ultramarathons, sending runners on three loops around Barr Lake's scenic shoreline dirt trail. With less than 500 feet of total elevation gain over 31.6 miles, this course is purpose-built for PRs — not sufferfests. Continuous views of the lake and the snow-capped Front Range keep the miles rolling by at Barr Lake State Park in Brighton.
Suitable for first-timers
Brighton, CO, United StatesJune 13, 2026
Barr Lake Trail Race 50K is a multi-loop trail race in Brighton, CO, United States, held on June 13, 2026. The course covers 31.6 miles, climbs 480 ft, and has a 9h cutoff.
| Location | Mile | Elevation | Cutoff | Crew | Drop bags |
|---|---|---|---|---|---|
Start / Finish Start | 0.0 | 5,098 ft | — | ||
50K Turnaround Checkpoint | 2.0 | 5,102 ft | — | ||
Start / Finish Aid Station | 4.0 | 5,098 ft | — | Drop Bags | |
Lark's Lounge Aid Station | 7.0 | 5,102 ft | — | ||
O'Brian's Oasis Aid Station | 10.3 | 5,098 ft | — | ||
Start / Finish Aid Station | 13.1 | 5,098 ft | — | Drop Bags | |
Lark's Lounge Aid Station | 16.1 | 5,102 ft | — | ||
O'Brian's Oasis Aid Station | 19.4 | 5,098 ft | — | ||
Start / Finish Aid Station | 22.3 | 5,098 ft | — | Drop Bags | |
Lark's Lounge Aid Station | 25.3 | 5,102 ft | — | ||
O'Brian's Oasis Aid Station | 28.6 | 5,098 ft | — | ||
Finish Finish | 31.5 | 5,098 ft | 9h3:00 PM | Crew | Drop Bags |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Open, exposed lakeside course offers little shade — sun protection essential
Afternoon thunderstorms are possible in Colorado in June on exposed terrain
No required gear specified
No recommended gear specified
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