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Run Rabbit Run
~450 athletes
Steamboat Springs, CO, USASeptember 12, 2025 - September 19, 2026
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Ultra 100 Mile Race
September 18, 2026 @ 09:00
Start Time
09:00
Profile
hilly
Elevation
+18045 / -0 ft
+5500m / -0m
Net: +18045 ft
Surface
trail
Fast Score
15/100
Scenic Score
95/100
Start Waves & Corrals
Two waves: Tortoises start 9:00 AM Friday (36-hr cutoff); Hares (competitive/prize division) start 1:00 PM (30-hr cutoff). Early Bird option at 7:00 AM for older tortoises. 100-mile field capped at 450.
Notable Facts
- Offers the largest prize purse of any 100-mile trail race in the world — over $100,000 total, $20,000 to each of the men's and women's winners.
- Unique two-wave format: 'Tortoises' start 9:00 AM (36-hr cutoff), 'Hares' (elite/prize division) start 1:00 PM (30-hr cutoff).
- Charity race in Steamboat Springs, CO; the 100 began in 2012, the 50 in 2007. Over $700,000 donated to charity since 2007.
- Course runs on Routt National Forest trail over Buffalo Pass (~10,300 ft) and Emerald Mountain.
- Men's Hare course record is 17:23:34 (Dave Stevens, 2023); Jason Schlarb's 17:15:20 from 2013 was set on the old course.
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