HalvBirken Run 12 km 2026

HalvBirken Run 12 km 2026 is an official amateur trail running event in Lillehammer, Norway on 13 June 2026. The official Birken page describes a 12 km trail race from Birkebeineren Ski Stadium to Håkons Hall with mixed trail, dirt-road, and former Olympic ski-track terrain, and says timed participation is open from age 16 with untimed participation available for ages 13 to 15.