About This Event
Finland's largest trail running event takes place in the stunning wilderness of Oulanka National Park, offering an unforgettable running experience through some of the country's most breathtaking landscapes. The race follows the legendary Karhunkierros trail, winding through deep forests, dramatic river gorges, and towering fells, with technical trails featuring suspension bridges and diverse terrain challenges. With distances ranging from 13 kilometers to 166 kilometers, the event accommodates runners of all experience levels, from beginners seeking their first trail challenge to seasoned ultrarunners pursuing the ultimate wilderness adventure. The race finish is located in the heart of Ruka village, providing a festive atmosphere for the post-race celebrations. The 2025 event set a new participation record with 3,412 runners, highlighting the race's growing reputation in the international trail running community. The challenging conditions and remote wilderness setting make this a true test of endurance and mental fortitude.