Empire, CO, United States · Saturday, September 12, 2026

Fixed Distance 50K

Devil on the Divide Ultra

Race completed

50 km Distance

2,300 m Climbing

5.9 Grit · Challenging

37.6383° N, 120.9022° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 46 m / km Mountain. Significant climbing. Steep sections will require power hiking.

Time limit 11 hours 13:12 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 62% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →

Field size ~157 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 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, September

Daytime high 33°C

Night low 16°C

Rainfall Dry — rain unlikely

Daylight 12 h 36 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 168 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a mountain course. Poles are highly recommended for the sustained climbs.

By UltraHub Expert

👟 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 with 2,300 m of ascent.

Trail Running Shoes46 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition50 km of self-supported fuelling between aid stations.
Hydration VestsPole attachment and chest-strap stability on steep ground.
Trekking Poles2,300 m of ascent to walk up.
GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.

Adidas

Terrex Speed Ultra

★★★★★ 4.5

Adidas

Terrex Agravic Speed Ultra

★★★★★ 4.5

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Black Diamond

Distance FLZ

Lightweight folding trekking poles with FlickLock Z adjustment. 340g per pole.

$170 ★★★★★ 4.7

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

Course Notes

Clear Creek Metropolitan Recreation District is pleased to present the most beautiful and challenging trail races in the state of Colorado with breathtaking (literally and figuratively) views of Clear Creek County and the Continental Divide.

Similar races

Other 50K trail ultras, closest in distance first.