Here we go again! Welcome to challenge yourself in
NUTS KARHUNKIERROS
22.–23.5.2026
Step Boldly onto the Trail
NUTS Karhunkierros – May 22–23, 2026
Registration opens October 14!
What
NUTS Karhunkierros
Finland’s largest trail running event, offering an unforgettable running experience in the stunning landscapes of Oulanka National Park. Various distances: 34 km, 55 km, 83 km, and 166 km. The event is suitable for beginners and experienced ultrarunners alike.
Where
Oulanka National Park
The finish area is located in the heart of Ruka village. The routes traverse the breathtaking scenery of Oulanka National Park, offering diverse and challenging trails.
When
May 22-23, 2026
Registration opens on Tuesday, October 14, 2025, at 6:00 PM! Secure your spot and prepare for the highlight of the summer.
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Distances & Routes
166 km
From Ruka to the Arctic Circle and back! 166 km on the legendary Karhunkierros trail offers fell summits, deep wilderness, and the ultimate ultra challenge – twice!83 km
From the Arctic Circle to Ruka! 83 km on the Karhunkierros trail takes you from Hautajärvi through deep forests, river gorges, and towering fells to the finish in Ruka.55 km
55 km of demanding trail running through Finland’s wilderness! This course takes you through forests, river gorges, and fells – the perfect balance of challenge and beauty.
