The Great Divide Ultra Sunday Run

Race completed

50 km Distance

not publishedn/a Climbing

2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

38.9419° N, 105.1572° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 11 hours 13:12 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. More forgiving than 62% of 50K races. Measured against 1034 races of the same distance. Cut-off calculator →

Field size ~52 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, June

Daytime high 26°C

Night low 9°C

Rainfall Mostly dry

Daylight 14 h 48 m of light

Regional 2001-2020 average for June — NASA POWER, grid elevation 2372 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	50km	52	Ryan Haylett · 04:31:10	Alexandra Thompson · 02:33:01
2025	50km	16	Michael Herrera · 04:56:13	Genevieve Harrison · 05:01:34
2024	50km	33	Jeremy Brooks · 04:57:47	Wendy Roberts · 06:09:12
2023	50km	25	Andy Sivanich · 04:30:48	Nora Rex · 05:42:09
2021	50km	13	Andrew Mueller · 05:39:54	Laurel Fiddler · 05:50:26

The field grew 225% between 2025 (16) and 2026 (52). 37% of the 2026 field were women.

DUV results for the 2026 edition (50km) — 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 50 km of trail.

Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 50 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 50 km, without the bounce.
GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

Adidas

Terrex Speed Ultra

RunRepeat found the Adidas Terrex Speed Ultra to have a grippy outsole and great lockdown, while iRunFar noted that the shoe works on a variety of trail conditi…

★★★★★ 4.5

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

Tailwind