The Great Divide Ultra 100km

Race completed

100 km Distance

not publishedn/a Climbing

5.0 est Grit · Challenging

Calculated from 100 km alone — the organiser has not published an elevation profile. Read 5.0 as a floor, not a verdict.

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

What the course asks

Time limit 22 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 Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it.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 83% of 100K races. Measured against 214 races of the same distance. Cut-off calculator →

Field size ~27 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (100km) — 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 47 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	100km	27	Christopher Murphy · 11:24:31	Leah Klempner · 12:42:03
2026	100mi	22	Jesse Lauder · 21:10:06	Karen Krob · 26:56:42
2025	100km	18	Bronson Fiore · 10:56:42	Lizzie Jones · 13:37:00
2025	100Miles	17	Quentin Tobey · 24:44:50	Katelyn Johnson · 26:45:58
2024	100km	28	Ian Armstrong · 11:26:54	Barbara Powell · 14:55:29
2024	100Miles	16	Joe Miller · 24:21:13	Carmen Borsa · 29:58:45
2023	100km	38	Kevin Flanegin · 12:10:06	Yumi Spiller · 13:09:50
2023	100Miles	11	Jason Wheat · 24:35:59	Christine Tokarz · 25:05:45

30% of the 2026 field were women.

DUV results for the 2026 edition (100km) — 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

🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of trail.

Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Flask capacity for 100 km, without the bounce.
Headlamps A 22 h limit puts you out there after dark.
Accessories Chafe and blisters end more 100 km races than fitness does.

Salomon

Aero Glide 4 Grvl

$159.95 ★★★★★ 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

Maurten