Sprint Ultra 100K is the 104km ultra trail at Kullamannen by UTMB 2025 (Molle, Sweden). The race starts on October 30, 2025.
By gradient, 4% of the distance is uphill, 6% downhill and 89% flat. Surface: 54% trail, 25% road, and 18% smooth. Flat-equivalent effort: 115.8 FlatKM.
The course is runnable enough that trekking poles are not needed.
There is too little runnable descent to damage the quads: plan the race around climbing and fuelling.
On race day, start temperatures have historically ranged from 5°C to 12°C, with around 8°C at the highest point; the chance of precipitation is about 51%.
344 finishers completed the 2025 edition. Men's winner: Tuomas Kari (Finland) in 8:36:19. Women's winner: Anna-Stiina Erkkilä (Finland) in 9:12:02.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Sprint Ultra 100K.
Other distances of Kullamannen by UTMB 2025Kullamannen 100 Miles (160km)·Seventh Seal 50K (57.0km)
Other editions of Sprint Ultra 100K2026
Official websitekullamannen.utmb.world
