14th Annual Run Rabbit Run 100 / 19th Annual Run Rabbit Run 50
Run Rabbit Run 100 Mile · 101.8 miles
Ran · this year's race is done.
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.
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Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.
Distance101.8 miles
Climb20,391 ft
Descent20,391 ft
High point10,557 ft
Time limit36:00:00
Aid stations17
Startednot checked yet
Finishednot checked yet
Finish ratenot checked yet
The course
Where it goes
lollipop · 17 aid stations
Point-to-point-feeling but starts and finishes at the same location: a stem out from the ski area base over Mount Werner and down Fish Creek Falls Trail to Long Lake, then Continental Divide/Buffalo Pass roads to Summit Lake and Billy's Rabbit Hole, descending Spring Creek Trail through downtown Steamboat to Olympian Hall (roughly halfway); a ~12.7 mile loop around Emerald Mountain (Blackmere/Lane of Pain/Ridge Road/Stairway to Heaven) that returns to Olympian Hall; then back up the same stem in reverse (Dry Lake, Billy's Rabbit Hole, Summit Lake, Long Lake via the Wyoming/Continental Divide Trail, Mount Werner) to the finish at the ski area base. Runs as two divisions from the same start/finish: Hares (1 PM start, prize-money division, 30-hour cutoff) and Tortoises (9 AM start, 36-hour cutoff, pacers allowed).
About half the course sits at or near 10,000 ft (Continental Divide / Buffalo Pass / Wyoming Trail); the nominal high point, 10,557 ft, is on the Wyoming Trail between Summit Lake and Long Lake on the return leg. The race's own FAQ says GPS devices typically read the course at about 103.5 miles versus the published ~101.8-101.5; the race declines to wheel the course and treats trail-distance precision as beside the point. Bears (including sows with cubs) and mountain lions are an explicit hazard on the Emerald Mountain / Blackmere section, run mostly in the dark. The race reports more 100-mile DNFs from unexpected overnight cold than any other cause.
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.
HARES: crew may aid only at designated crew aid stations, at the top of the gondola, and anywhere between Spring Creek Trailhead and Olympian Hall (through town). TORTOISES and 50 MILERS may receive aid at any designated crew aid station or spectator access point. No crewing or vehicle access above Dry Lake on Buffalo Pass Road, and no driving to the Fish Creek Falls aid station at all (foot or bike only, 4 miles from Olympian Hall) -- violating either is grounds for disqualification. Crew/pacer access by station: Start (crew yes), Mount Werner (no crew), Fish Creek Falls TH (crew via foot/bike only, no parking/driving), Long Lake (no crew), Summit Lake outbound (crew yes, no pacer), Billy's Rabbit Hole (no crew), Dry Lake outbound mi 44.5 (crew and pacer yes, no parking -- drop off and leave), Olympian Hall both visits (crew and pacer yes, ample parking), Lane of Pain minimal aid x2 (no crew), Dry Lake return mi 70.8 (crew and pacer yes, no parking), Summit Lake return mi 80.8 (crew and pacer yes), Mount Werner return (no crew), Finish (crew yes).
runrabbitrunsteamboat.com
Pacer rules
Pacers for TORTOISES only, at designated exchange points, except: a Tortoise 100-mile runner over 60 (woman over 50) may have a pacer for the entire course. Only one pacer at a time. ALL 100-milers (Tortoises AND Hares) may have a pacer from Spring Creek Trailhead to Olympian Hall, both directions (through downtown Steamboat, for safety crossing Highway 40/Lincoln). ALL 100 and 50 milers may have as many pacers/companions as they like from the top of the gondola building to the finish (the last ~4 miles); a Hare's town pacer must stop at Olympian Hall. Pacers may only meet their runner at crew-access aid stations and must get themselves to/from stations; a single mile figure cannot represent this since the allowed pickup points differ by division and by exchange point.
runrabbitrunsteamboat.com
Drop bag rules
Two drop bags permitted, transported to Olympian Hall and Summit Lake only; each is accessible up to four times over the race (Olympian Hall x2, Summit Lake x2) plus a bag may be left at the start/finish. Bags are dropped off Thursday (100mi) before the briefing. No hard-sided bags, coolers or tubs -- 'we will not deliver them.' Drop bags returned to Olympian Hall; last pickup is noon Sunday, Sept 20 -- bags are NOT shipped and unclaimed contents are donated to charity or discarded at noon.
runrabbitrunsteamboat.com
Cutoff philosophy
The 100-mile cutoffs are described as generous but strictly enforced. Because Hares start 4 hours after Tortoises but share the same wall-clock station cutoffs for most of the course, the race explicitly warns Tortoises that the early cutoffs are really sized for Hares, and a Tortoise running close to them is unlikely to finish. A runner who checks out of an aid station and returns after its cutoff is considered to have abandoned the run; the race asks runners not to argue with aid station staff and to 'come back next year and prove us wrong.'
runrabbitrunsteamboat.com
Aid stations
Every stop, and what you get there
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