Run Rabbit Run

September 13 & 14, 2019
Steamboat Springs, CO
50 & 100 Mile Endurance Races

Are you a Tortoise or a Hare?

Find out in our FAQs.

Beautiful Bunny Hops

Through the amazing autumn foliage of Routt National Forest
Sponsored by

Altra Running

Elevating Scenery

100 mile elevation gain/loss = 20,191 ft
50 mile elevation gain/loss = 9,031 ft
Average elevation = approx. 9,000 ft

Race Information

Presented by:
Altra Running
8th Annual Run Rabbit Run 100 Mile Race
Friday, September 13, 2019
Limited to 350 entrants – Hares and Tortoises
Tortoises: 8:00 AM start (36 hr cutoff/8 PM)
Hares: Noon start (30 hr cutoff/6 PM)

13th Annual Run Rabbit Run 50 Mile Race
Saturday, September 14, 2019
6:00 AM start
Limited to 200 entrants.
(15 hour cutoff/9 PM).


Race entry fees are:
100 Miler:  $240, before January 5, 2019;
$305, Jan. 5 to April 29, 2018; $345 April 30 and after.

50 Miler: $135, before January 5, 2019;
$175, Jan. 5 to April 29; $205 April 30 and after.

No refunds or transfers.  We will offer a partial deferred entry into the 2020 race if you withdraw prior to September 7, 2019 and if your place is taken by someone from our waitlist. Please see the registration page for details.

If you have a credit for 2019, please see the registration page for details.

2018 Results

Prize Money & Awards

Our Bunny Money Meter is now at $75,000 – $15,000 guaranteed for the 100 mile winners! We’re looking to go higher. Much higher! We offer the highest purse of any trail ultra marathon in the world!

Predict Top Male/Female Hare and Top Male/Female 50 Miler and win $500!
Look here for details.

General Information

  • Time Limits
    The 50 miler has a 15 hour time limit, so some runners should be prepared to run in the dark and you will need to carry a flashlight. The 100 miler has a 36 hour time limit (30 hours if you’re a Hare).
  • Tortoise vs. Hare
    You're a Hare if you are running for the 100 Mile prize money, can run without pacers and can finish in the 30 hour time limit. Otherwise you're a Tortoise.
  • Runners Beware
    These are not beginner’s runs. The uphills and downhills are fairly steep. You'll spend a lot of time at an altitude of nearly two miles. There may be snow, rain, sleet, wind, or then again, it may be hot. Please do not try to run this course if you’re not completely prepared.
  • Weather
    The average high in Steamboat on September 13th is 70 degrees. The average low is 34. Temps will be lower at higher elevations. Sunrise is approximately 6:45 AM and sunset is 7:19 PM. Civil twilight begins 6:18 AM and ends at 7:47 PM. There will be a full moon September 13 (day of the 100 start)!