Ultramarathon

Run Rabbit Run 100 Mile

Run Rabbit Run 100 combines a tough high-country loop around Steamboat Springs with separate Hare and Tortoise starts and a six-figure prize purse.

Next raceFriday, September 18, 2026
Distance categoryUltramarathon
LocationSteamboat Springs, Colorado
Get alertsLast checked August 14, 2026

Quick facts

  • The 100-mile field is capped at 450 and sold out well before the 2026 race.
  • Tortoises start at 9 a.m. with 36 hours; Hares start at 1 p.m. with 30 hours.
  • More than $100,000 in prize money draws a deep competitive field.

About the Run Rabbit Run 100 Mile

This independent Colorado mountain race has grown into a competitive 100-miler while retaining distinct starts for elite Hares and broader-field Tortoises.

Course

The mountain loop uses Routt National Forest trail around Steamboat Springs. Sustained climbs, altitude, technical descent, and a full night out reward conservative early pacing.

Race-day weather

September may deliver warm sun, freezing overnight temperatures, rain, or early snow. High-country exposure makes spare layers important.

Past Run Rabbit Run 100 Mile dates and results

YearDateStatusResults
2026Friday, September 18, 2026Upcoming

Run Rabbit Run 100 Mile FAQ

When is the Run Rabbit Run 100 Mile?

The 2026 Run Rabbit Run 100 Mile is on Friday, September 18, 2026.

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