Lahti, Finland · Sunday, June 28, 2026
Fixed Distance 50K
Ultra X 50 Finland
Race completed
51 km Distance
1,000 m Climbing
4.1 Grit · Challenging
What the course asks
Climbing rate 20 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
Field size ~123 Mid-sized. Company early, well spread out by halfway.
DUV results for the 2025 edition (51km) — 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 19°C
Night low 10°C
Rainfall Mostly dry
Daylight 19 h 13 m of light
Regional 2001-2020 average for June — NASA POWER, grid elevation 98 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 51 km of trail with 1,000 m of ascent.
- Trail Running Shoes 20 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition 51 km of self-supported fuelling between aid stations.
- Hydration Vests Pole attachment and chest-strap stability on steep ground.
- Trekking Poles 1,000 m of ascent to walk up.
- GPS Watches Battery life first — a 51 km day outlasts most full-GPS modes.
Similar races
Other 50K trail ultras, closest in distance first.