Contrevoz, France · Saturday, September 26, 2026

Fixed Distance 50 mi

Ultra Trail Grand Colombier - Ultra 80km

23 days to go

80 km Distance

3,300 m Climbing

9.0 Grit · Elite / extreme

45.8046° N, 5.6284° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 41 m / km Mountain. Significant climbing. Steep sections will require power hiking.

Time limit 17 hours 12:45 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 71% of 50 mi races. Measured against 445 races of the same distance. Cut-off calculator →

Field size ~352 Large. Rarely out of sight of another runner.

DUV results for the 2025 edition (74km) — 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 20°C

Night low 10°C

Rainfall Mostly dry

Daylight 12 h 02 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 579 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 80 km of trail with 3,300 m of ascent.

Trail Running Shoes 41 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 80 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 3,300 m of ascent to walk up.
Headlamps A 17 h limit puts you out there after dark.

Adidas

Terrex Agravic Speed Ultra

★★★★★ 4.5

Salomon

Ultra Glide 4

$159.95 ★★★★★ 4.6

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Salomon

ADV Skin 12

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

$180 ★★★★★ 4.8

Komperdell

Carbon Ultralight Vario 4

4-section folding carbon poles with compact pack size for mandatory gear.

$160 ★★★★★ 4.5

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

All gear guides →

Course Notes

En traversant des montagnes majestueuses, des vallées verdoyantes et des sentiers escarpés, venez défier le Grand Colombier, ce sommet désormais devenu l'un des juges de paix du Tour de France cycliste. Départ de Contrevoz, arrivée à Culoz-Béon

Similar races

Other 50 mi trail ultras, closest in distance first.