Races
Run Rabbit Run
Steamboat ski base to Emerald Mountain and back. Twenty thousand feet. Mount Werner twice. Continental Divide miles near two miles elevation. Fall colors and thin air.
100 mi+24,144 ft-24,193 ft36 hours6,696 ft to 10,591 fttech 7/10Checkpoints per race bookHares vs TortoisesEmerald MountainContinental DivideWSER qualifierSeptemberWSER qualifierHardrock qualifier
Distance100 mi
Gain+24,144 ft
Loss-24,193 ft
Altitude6,696 ft to 10,591 ft
Technicality7/10
Air30°F to 75°F
- Start6,995 ft
- High10,578 ft
- Low6,696 ft
- Finish6,946 ft
- Fish Creek at mile 40, cutoff 14 hours
- Finish Steamboat at mile 101, cutoff 30 hours
Terrain
Field, 2025 · 13-year sampleresults
Starters359
Finish rate67%
Median30:49
Sub-2411
Geometrycourse math
Steepest drop1,535 ft-14.5% over 2.0 mi
Night miles48 misunset near 18:00 local
Time over 10k ft41%
Weather at the cruxcourse math
At hour 9 of race, feels like 35 C (92 F).Sample of 7 race days, medium confidence.At hour 9 of race, apparent temperature P90 is 35 C / 95 F.
Course records
Men8:28:33Skip Brand
Women4:56:55Lieko Earle
The cruxMount Werner double pass and Emerald Mountain above 10,000 feet
Course DNA
The Course
Start at Steamboat ski base, 6,886 feet. Climb Mount Werner to 10,372 on Storm Peak Challenge Trail. Buffalo Pass and Rabbit Ears turnaround near 10,534 feet. Emerald Mountain loops through town. Fish Creek Falls descent. Summit Lake and Dry Lake high country on the Wyoming Trail near the Continental Divide. Roughly 86 miles trail, 8 miles paved, rest jeep road. One hundred one point five miles. Twenty thousand three hundred ninety-one feet up and down. Pace the early miles. The split often shows at mile 50.
The Work
Repeated 3,500-foot climbs to Mount Werner. Train uphill repeats at altitude. Hares start Friday afternoon. Tortoises start Friday morning with more night miles. Emerald Mountain at night is cold and technical. Quads take the Fish Creek descents.
Kit
Layers for 40-degree swings between night and afternoon. Two lamps with lithium backup. Poles for long climbs. Crew bike or foot access only at Fish Creek Falls. Drop bags at Summit Lake and Olympian Hall.
Race Day
Do not race the first Mount Werner climb. Strict aid cutoffs. Hares and Tortoises share the course with different start times. Olympian Hall crew access has a hard window. Thirty-hour cutoff. Prize money brings depth up front. Pace for cutoffs, not headlines.
Results
Run Rabbit Run finish lines.
Winner: Jon Hanson, 21:43:23.
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Sources (5)
- Field stats (2025): https://ultrasignup.com/results_event.aspx?did=121221
- Qualifier: wser: https://www.wser.org/qualifying-races/
- Qualifier: hardrock_qualifier: https://hardrock100.com/qualifying/
- Course record (M): https://ultrasignup.com/results_event.aspx?did=60025
- Course record (F): https://ultrasignup.com/results_event.aspx?did=35421