Bouillon, Belgium · Saturday, June 6, 2026
Fixed Distance 50K
Trail Godefroy Bouillon TGB 50
Race completed
53 km Distance
1,840 m Climbing
5.4 Grit · Challenging
What the course asks
Climbing rate 35 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 9 hours
10:11 min/km average. Generous. Walkable throughout for most of the field. Tighter than 77% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~249 Large. Rarely out of sight of another runner.
DUV results for the 2025 edition (53km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, June
Daytime high 21°C
Night low 11°C
Rainfall Mostly dry
Daylight 16 h 09 m of light
Regional 2001-2020 average for June — NASA POWER, grid elevation 295 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a rolling course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 53 km of trail with 1,840 m of ascent.
- Trail Running Shoes35 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition53 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 53 km day outlasts most full-GPS modes.
Course Notes
Start and finish are in Bouillon, Quai des Saulx, 6830 Bouillon
Similar races
Other 50K trail ultras, closest in distance first.