Ultra Running Hub Frouard, France · Friday, September 4, 2026
Backyard
Backyard Infinity Trail Nancy
Race completed
not publishedn/a Distance
100 m Climbing
not publishedn/a Grit
We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.
What the course asks
Field size ~120 Mid-sized. Company early, well spread out by halfway.
DUV results for the 2025 edition (32h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, September
Daytime high 21°C
Night low 9°C
Rainfall Mostly dry
Daylight 13 h 19 m of light
Regional 2001-2020 average for September — NASA POWER, grid elevation 256 m. Not a forecast.
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for this trail race with 100 m of ascent.
- Trail Running ShoesCushioning on trail that is still there in the last quarter.
- Race NutritionSelf-supported fuelling between aid stations.
- Hydration VestsFlask capacity without the bounce.
- HeadlampsA 24 h limit puts you out there after dark.
- GPS WatchesBattery life first — an ultra outlasts most full-GPS modes.
Similar races
Other trail ultras of the same format.