Ultra Running Hub L'Abbaye, Switzerland · Sunday, October 11, 2026
Fixed Distance 50K
Trail Vallée de Joux 51km
25 days to go
58 km Distance
2,970 m Climbing
7.4 Grit · Hardcore
What the course asks
Climbing rate 51 m / km
Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 9 hours
9:19 min/km average. Comfortable. Room to walk the climbs and stop at aid. Among the tightest 50K cut-offs we track. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~69 Mid-sized. Company early, well spread out by halfway.
DUV results for the 2025 edition (68km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, October
Daytime high 14°C
Night low 6°C
Rainfall Showers likely
Daylight 11 h 13 m of light
Regional 2001-2020 average for October — NASA POWER, grid elevation 738 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a mountain course. Poles are highly recommended for the sustained climbs.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 58 km of trail with 2,970 m of ascent.
- Trail Running Shoes51 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition58 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles2,970 m of ascent to walk up.
- GPS WatchesBattery life first — a 58 km day outlasts most full-GPS modes.
Course Notes
Départ de L'Abbaye - arrivée à Le Sentier
Similar races
Other 50K trail ultras, closest in distance first.