Birken Mountain Marathon 42 km 2026

Birken Mountain Marathon 42 km 2026 is an official amateur trail marathon from Sjusjøen to Lillehammer, Norway on 13 June 2026. The official Birken page describes a 42 km mountain race from Sjusjøen Cross-Country Arena to Håkons Hall through varied mountain terrain with aid stations on course, and states that participants aged 18 and older can take part.