O-festivalen Trondheim 2026

O-festivalen Trondheim 2026 is the official three-day Norwegian amateur orienteering festival in Trondheim from 19 to 21 June 2026. The organizer Freidig presents sprint racing around Sverresborg Folkemuseum on Friday, middle distance in Trøndelag forest and marsh terrain on Saturday, and long distance on Sunday, with public entry links for all three races plus children’s team competition and Barnas O-festival activities.