Here we go again! Welcome to challenge yourself in
NUTS KARHUNKIERROS
22.–23.5.2026
Step Boldly onto the Trail
Thanks all!
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.
DYNAFIT is the brand by athletes, for athletes. Speed is a part of our DNA, and we are driven by our aspiration to equip mountain endurance athletes from head-to-toe, summer and winter, 365 days a year, with the most efficient gear possible. Intelligent materials, innovative technology, and the courage to follow unconventional paths – these are the keys to our success. Minimalist and efficient, but at the same time totally reliable products, with the result that we support discerning athletes – whether on ski tour, or trail running, mountaineering or biking.
Nosht is NUTS’ Official Energy Partner
Nosht is the official energy partner of NUTS for 2025. At the aid stations along the course, runners will find a familiar and trusted hydration option – lemon-flavored Nosht Sports Drink.
27.5.2025 at 8:29
NUTS Karhunkierros set a new participation record with 3,412 runners in muddy trail conditions. Eevi Bengs made history by winning the overall 166K race and smashing the course record by over an hour.
Artikkeli Mud, Records, and Glory – Historic Weekend at Karhunkierros 2025 julkaistiin ensimmäisen kerran NUTS Trail Running.
20.5.2025 at 10:18
Ready for action in Kuusamo?
Karhunkierros 2025 brings top athletes, tight battles and record-breaking potential to the rugged trails of Oulanka National Park.
Artikkeli Don’t Miss This – Karhunkierros Preview Highlights julkaistiin ensimmäisen kerran NUTS Trail Running.
11.5.2025 at 15:59
This spring, it’s not just cowbells ringing at Oulanka – construction work is ongoing at the research station, and there will be no parking available near the Oulanka start area on Friday. 🏁 This primarily affects runners in the 55 km distance, whose start is located near the Oulanka Visitor Centre. Parking has always been…
Artikkeli Oulanka parking relocated to Käylä – free shuttle on Friday 4–8 PM julkaistiin ensimmäisen kerran NUTS Trail Running.
10.5.2025 at 6:11
Salty, sweet, hot, and cold – long trails deserve great treats. From crunchy chips and smooth chocolate to warm soups and refreshing Crisp Radlers, here’s everything you’ll find at the aid stations and finish area of NUTS Karhunkierros 2025. Plan your favorites in advance!
Artikkeli What’s on the Table at NUTS Karhunkierros 2025 Aid Stations and the Finish Line? julkaistiin ensimmäisen kerran NUTS Trail Running.
Distances & Routes
166 km
83 km
55 km
34 km
