Bossost, Spain · Wednesday, July 1, 2026
Fixed Distance 50 mi
Val dAran by UTMB - TDL (Termières dera Libertat)
Race completed
75 km Distance
5,100 m Climbing
10.0 Grit · Elite / extreme
What the course asks
Climbing rate 68 m / km
Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 20 hours
16:00 min/km average. Generous. Walkable throughout for most of the field. Among the most forgiving 50 mi cut-offs we track. Measured against 445 races of the same distance. Cut-off calculator →
Typical conditions, July
Daytime high 26°C
Night low 13°C
Rainfall Mostly dry
Daylight 15 h 18 m of light
Regional 2001-2020 average for July — NASA POWER, grid elevation 866 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 75 km of trail with 5,100 m of ascent.
- Trail Running Shoes 68 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition 75 km of self-supported fuelling between aid stations.
- Hydration Vests Pole attachment and chest-strap stability on steep ground.
- Trekking Poles 5,100 m of ascent to walk up.
- Headlamps A 20 h limit puts you out there after dark.
Similar races
Other 50 mi trail ultras, closest in distance first.