Espoo, Finland · Saturday, September 5, 2026

Fixed Distance 50 mi

Nuuksio70 Trail Ultra

Race completed

72 km Distance

1,300 m Climbing

5.6 Grit · Challenging

60.2052° N, 24.6522° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

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. Tighter than 72% of 50 mi races. Measured against 455 races of the same distance. Cut-off calculator →

Field size ~138 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (70km) — finishers 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 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

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

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.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Adidas

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

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 50 mi trail ultras, closest in distance first.