Arleuf, France · Saturday, November 14, 2026

Fixed Distance 50 mi

Topo Athletic Bibracte Ultra-Trail - La Balade de Dumnorix

45 days away

63 km Distance

2,000 m Climbing

6.2 Grit · Hardcore

47.0447° N, 4.0218° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 32 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 15 hours 14:17 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 84% of 50 mi races. Measured against 470 races of the same distance. Cut-off calculator →

Typical conditions, November

Daytime high 10°C

Night low 3°C

Rainfall Mostly dry

Daylight 9 h 27 m of light

Regional 2001-2020 average for November — NASA POWER, grid elevation 298 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

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 63 km of trail with 2,000 m of ascent.

Trail Running Shoes 32 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 63 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,000 m of ascent to walk up.
Headlamps A 15 h limit puts you out there after dark.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 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

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