Ultra Running Hub Oslo, Norway · Saturday, May 30, 2026
Fixed Distance 50K
EcoTrail of Oslo 50 km
Race completed
50 km Distance
1,026 m Climbing
4.0 Grit · Challenging
What the course asks
Climbing rate 21 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 9 hours
10:48 min/km average. Generous. Walkable throughout for most of the field. Tighter than 71% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~498 Large. Rarely out of sight of another runner.
DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, May
Daytime high 14°C
Night low 5°C
Rainfall Showers likely
Daylight 18 h 06 m of light
Regional 2001-2020 average for May — NASA POWER, grid elevation 259 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 50 km of trail with 1,026 m of ascent.
- Trail Running Shoes21 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles1,026 m of ascent to walk up.
- GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.
Course Notes
Start at Holmenkollen Ski Jump and finish at the Norwegian Operahouse.
Similar races
Other 50K trail ultras, closest in distance first.