Ultra Running Hub Espoo, Finland · Saturday, September 5, 2026
Trail 50mi
Nuuksio70 Trail Ultra
16 days to go
72 km Distance
1,300 m Climbing
5.6 Grit · Challenging
What the course asks
Climbing rate 18 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 12 hours
10:00 min/km average. Generous. Walkable throughout for most of the field.
Typical conditions, September
Daytime high 15°C
Night low 11°C
Rainfall Mostly dry
Daylight 13 h 55 m of light
Regional 2001-2020 average for September — NASA POWER, grid elevation 19 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 72 km of trail with 1,300 m of ascent.
- Trail Running Shoes72 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition72 km of self-supported fuelling between aid stations.
- Hydration VestsFlask capacity for 72 km, without the bounce.
- HeadlampsA 12 h limit puts you out there after dark.
- GPS WatchesBattery life first — a 72 km day outlasts most full-GPS modes.
Course Notes
Single loop on small trails in Nuuksio National Park. Wild forests, lakesides, slow winding trails with plenty of rocks and roots. About 10% of the course on faster ground such as forest roads with gravel surface.
Similar races
Other 50MI trail ultras, closest in distance first.