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Ultras · US · CO

Run Rabbit Run

14th Annual Run Rabbit Run 100 / 19th Annual Run Rabbit Run 50
Run Rabbit Run 50 Mile · 50M
Full
Entry has closed for this year. Both the 100-mile (350 cap, Tortoises+Hares combined per the registration page) and 50-mile (200 cap) fields are full for 2026; UltraSignup waitlists are open for both. Bib numbers/division lock on Sept 7, 2026; UltraSignup registration/waitlist activity closes Sept 15, 2026. Drop-bag pickup and the awards ceremony happen the following morning, Sunday Sept 20, 2026, after the last runner cutoff.
Race dateSeptember 19, 2026
Start6:00am
Whenin 28 days
First held2007
Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this. Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.
Distance 50M
Climb not checked yet
Descent not checked yet
High point 10,568 ft
Time limit 15:00:00
Aid stations 11
Started not checked yet
Finished not checked yet
Finish rate not checked yet
The course

Where it goes out and back · 11 aid stations

Out-and-back from the ski area base over Mount Werner, along Mountain View and Fish Creek Falls trails to Long Lake, on to Base Camp Trailhead and Dumont Lake, then up Grizzly Creek Road to a card-punch turnaround at the base of the Rabbit Ears rock formation on Rabbit Ears Pass, before retracing the entire route back to the finish at the ski area base. One start wave (plus an over-60/over-50 Early Bird option); no Hare/Tortoise split and no prize money on this distance.

A genuine out-and-back: every aid station except the Rabbit Ears turnaround (no aid, card-punch only) is visited twice, and 'sequence' rather than station name is the identity for the outbound/return pairs. Section-by-section leg mileages in the manual's prose (e.g. '6.0 miles' Start-to-Werner, '6.8 miles' Long Lake-to-Werner-return) do not always sum exactly to the official mile chart's cumulative figures embedded in the same manual (6.4 mi and 5.8 mi respectively for those same legs); the race's own 'Note on Distances' explicitly disclaims trail-mileage precision, so the chart's cumulative numbers are used as the aid_stations' `mile` field and the prose is treated as descriptive only. First climb to Mount Werner gains ~3,500+ ft in about 6 miles. No total elevation gain/loss figure for the 50-mile course was found published anywhere (unlike the 100 mile, which publishes 20,391/20,391); left null rather than estimated.

The race

What this one is

Two ultramarathons (50 mile and 100 mile) starting and finishing at the base of the Steamboat Ski Area in Steamboat Springs, Colorado, on trails of the Routt National Forest crossing Buffalo Pass and running past Fish Creek Falls, Long Lake and (100 mile only) Emerald Mountain and downtown Steamboat. The 100 mile race runs two divisions from different start times: Hares (competing for prize money, 1 PM start, 30-hour cutoff, no pacers) and Tortoises (9 AM start, 36-hour cutoff, pacers allowed from designated points).

The Run Rabbit Run 50 began in 2007, started by Fred Abramowitz as a charity run benefiting northern Colorado kids and causes; Betsy Kalmeyer designed the original 50 mile course (since changed). Paul Sachs became co-race director in 2008. The 100 mile race, run in Hare/Tortoise divisions and offering the highest purse of any 100-mile trail ultra in the world, began in 2012. Since 2012 the race has donated almost $700,000 to northern Colorado non-profits.

Getting in

Getting in Entry, lottery and what the race asks of you before race day.

Lottery
No
Lottery opens
not checked yet
Lottery draw
not checked yet
Field cap
200
Registration
UltraSignup runrabbitrunsteamboat.com
Qualifying
No qualifying race or time standard is required to enter. runrabbitrunsteamboat.com
Minimum age
not checked yet
Transfers
No runrabbitrunsteamboat.com
Deferrals
No runrabbitrunsteamboat.com
Crew, pacers and drop bags

The rules that shape your day Anything marked "not checked yet" is a gap in what we hold, never a no from the race.

Crew allowed
Yes runrabbitrunsteamboat.com
Vehicles per runner
not checked yet
Pacers
No runrabbitrunsteamboat.com
Muling
Not allowed runrabbitrunsteamboat.com
Drop bags
Yes runrabbitrunsteamboat.com
Cupless
not checked yet
Course marking
Fully Marked runrabbitrunsteamboat.com
Night running
Yes runrabbitrunsteamboat.com
Dogs
not checked yet
Headphones
Allowed
Crew rules
Dumont Aid Station is the ONLY spectator/crew-accessible point on the entire 50-mile course (runners pass it twice); no crew access anywhere else, including Mount Werner, Long Lake, Base Camp Trailhead or the Rabbit Ears turnaround. TORTOISE/50-MILER-tier crew rules apply (aid allowed at any designated crew station), there being no Hare division on this distance. runrabbitrunsteamboat.com
Pacer rules
No pacers for 50-mile runners for almost the entire course. The sole exception: any 50-miler may have a pacer (or several) from the top of the gondola building to the finish, roughly the last 4 miles. runrabbitrunsteamboat.com
Drop bag rules
Drop bags only at Base Camp Trailhead (passed twice) and at the finish. No hard-sided bags, coolers or tubs. Bags returned to Olympian Hall; last pickup noon Sunday, Sept 20 -- not shipped, unclaimed contents donated to charity or discarded. runrabbitrunsteamboat.com
Cutoff philosophy
The 15-hour overall cutoff is described as generous but strictly enforced, same as the 100-mile cutoffs. A runner who checks out of an aid station and returns after its cutoff is considered to have abandoned the run. runrabbitrunsteamboat.com
Aid stations

Every stop, and what you get there ● yes   · no   ? nobody has checked

Mile Station Cutoff Crew Bag Pacer Med To next
0.00 Start/Finish (Ski Area Base)
6,900 ft
? · ? 6.40
6.40 Mount Werner
10,372 ft
? · · · ? 6.80
13.20 Long Lake
9,850 ft
? · · · ? 5.20
18.40 Base Camp Trailhead ? · · ? 3.90
22.30 Dumont ? · · ? 2.70
25.00 Rabbit Ears Turnaround
10,500 ft
2:30pm · · · ? 2.70
27.70 Dumont 2:30pm · · ? 3.90
31.60 Base Camp Trailhead 4:00pm · · ? 5.20
36.80 Long Lake
9,850 ft
5:30pm · · · ? 5.80
42.60 Mount Werner
10,372 ft
7:45pm · · · ? 7.40
50.00 Finish (Ski Area Base)
6,900 ft
9:00pm ? ?
Same race, other lines

Other distances and other years

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