Ultra Running Hub Chalmazel-Jeansagniere, France · Saturday, July 4, 2026
Fixed Distance Marathon
ChalmaTrail - Chalmarathon
Race completed
45 km Distance
1,840 m Climbing
5.0 Grit · Challenging
What the course asks
Climbing rate 41 m / km
Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 8 hours
10:40 min/km average. Generous. Walkable throughout for most of the field. Tighter than 86% of Marathon races. Measured against 43 races of the same distance. Cut-off calculator →
Field size ~257 Large. Rarely out of sight of another runner.
DUV results for the 2026 edition (45km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, July
Daytime high 26°C
Night low 13°C
Rainfall Mostly dry
Daylight 15 h 37 m of light
Regional 2001-2020 average for July — NASA POWER, grid elevation 704 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 45 km of trail with 1,840 m of ascent.
- Trail Running Shoes41 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition45 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles1,840 m of ascent to walk up.
- GPS WatchesBattery life first — a 45 km day outlasts most full-GPS modes.
Similar races
Other Marathon trail ultras, closest in distance first.