Vail, AZ, United States · Saturday, December 5, 2026

Fixed Distance 50K

Colossal Vail 50 Km

66 days away

55 km Distance

not publishedn/a Climbing

2.8 est Grit · Entry level

Calculated from 55 km alone — the organiser has not published an elevation profile. Read 2.8 as a floor, not a verdict.

32.0479° N, 110.7120° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 9 hours 9:49 min/km average. Comfortable. Room to walk the climbs and stop at aid. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 79% of 50K races. Measured against 1034 races of the same distance. Cut-off calculator →

Field size ~64 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (55km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 14°C

Night low 0°C

Rainfall Dry — rain unlikely

Daylight 10 h 10 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 1262 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	55km	64	Johnny Ramos · 04:30:49	Brianna Grigsby · 04:40:44
2024	55km	67	Jose Delgado · 04:12:26	Aimee Nogoy · 05:54:55
2023	55km	80	John Trongard · 04:37:33	Sara Aranda · 05:30:26
2022	55km	79	Emilio Anaya Happel · 04:17:40	Tracy Thelen · 05:46:51
2021	55km	97	Peter Mortimer · 04:54:49	Caitlin Vogelsberg · 05:23:15
2019	55km	68	Kevin Schofield · 04:15:17	Caroline Mosley · 05:27:47
2018	55km	62	Jonathan King · 04:39:44	Constance Wannamaker · 06:46:09
2017	50km	87	Wouter Zwart · 04:42:46	Shawna Bedoka · 05:42:47
2016	50km	106	Patrick Thurber · 04:24:40	Devyn Young · 05:46:15
2015	50km	63	Sion Lupowitz · 04:37:39	Veronica Rudolphi · 04:46:12

The field has held steady: 67 in 2024, 64 in 2025. 38% of the 2025 field were women.

DUV results for the 2025 edition (55km) — 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 55 km of trail.

Trail Running Shoes 55 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 55 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 55 km, without the bounce.
GPS Watches Battery life first — a 55 km day outlasts most full-GPS modes.

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Salomon

Sense Ride 5

RunRepeat found the Salomon Sense Ride 5 to have immaculate lockdown and a smooth and stable ride, making it confident on moderate trails and steep downhills. I…

★★★★★ 4.5

Skratch Labs