Crested Butte 50 Mile Ultra

Race completed

80 km Distance

not publishedn/a Climbing

4.0 est Grit · Challenging

Calculated from 80 km alone — the organiser has not published an elevation profile. Read 4.0 as a floor, not a verdict.

38.8697° N, 106.9878° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~61 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 15°C

Night low 0°C

Rainfall Mostly dry

Daylight 12 h 03 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 3268 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50mi	61	Brennan Fife · 09:07:33	Sydney Welch · 09:01:49
2024	50mi	64	Brian Martin · 08:28:50	Emily Demarco · 09:53:33
2023	50mi	57	Justin Watkins · 08:29:52	Lauren Bruns-Buchheit · 10:46:15
2022	50mi	60	Timothy Shepard · 08:41:01	Carolyn McShea · 10:45:04
2021	53mi	79	Jack Daly · 07:22:39	Katie Lyons · 08:46:27

The field shrank 5% between 2024 (64) and 2025 (61). 36% of the 2025 field were women.

DUV results for the 2025 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 80 km of trail.

Trail Running Shoes 80 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 80 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 80 km, without the bounce.
Headlamps 80 km almost certainly means running into the night.
GPS Watches Battery life first — a 80 km day outlasts most full-GPS modes.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Asics