Finnsjön 100 - 100km

Race completed

100 km Distance

2,454 m Climbing

8.7 Grit · Elite / extreme

What the course asks

Climbing rate 25 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Field size ~4 Tiny. You will run alone for most of it.

DUV results for the 2026 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	100km	4	Jonathan Weidow · 08:57:25	Mia Saarni · 11:33:26
2025	100km	12	Jonathan Weidow · 09:11:31	Mia Saarni · 10:30:57

The field shrank 67% between 2025 (12) and 2026 (4). 25% of the 2026 field were women.

DUV results for the 2026 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

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

By UltraHub Expert

🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of road with 2,454 m of ascent.

Trail Running Shoes 25 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,454 m of ascent to walk up.
Headlamps 100 km almost certainly means running into the night.