2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
net elevation 8 m
Decision summary
Lower than 1% of comparable mapped races
36:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Stored GPS route
Quick answers
raceindex.org has a GPS course file for Run Rabbit Run 50 & 100 Mile Race Ultramarathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
The Run Rabbit Run 50 & 100 Mile Race Ultramarathon route has 11,159 m of ascent and 11,151 m of descent.
The Run Rabbit Run 50 & 100 Mile Race Ultramarathon route starts at Base of the Steamboat Springs ski area (Mount Werner base), elevation approximately 6,900 feet and finishes at Steamboat Springs ski area base. Underfoot, expect mountain singletrack trail with dirt road sections; described as some of the nicest singletrack in Colorado. It passes Steamboat Springs ski area, Mount Werner (10,568 ft), Buffalo Pass (10,300 ft), Long Lake and Summit Lake. High-altitude course run almost entirely between roughly 6,600 and 10,600 feet, crossing the Continental Divide and a few passes through downtown Steamboat Springs.
Two starts: Tortoises (9:00 AM, 36-hour cutoff) and Hares (1:00 PM, 30-hour cutoff). 12. Pacers allowed for 100 Mile Tortoises at designated exchange points; 100 Mile runners over age 60 may have a pacer for the entire course.
The stored route produces 11,159 m of ascent, while a source states 6,215 m. GPS sampling and elevation models can produce different totals, so both are labelled rather than combined.
Compare