Welcome to UltraBirken mountainbike race
The track differ each year. Start, finish and apr. length will be announced in 20119. the details of the track will be anounced one week before the race.
Participants must be 17 years old by 31.12.21. All participants must carry a backpack containing extra clothes and food. We recommend that our participants wear clothes in bright colors in case of accidents.
Number of entrants are limited to 600.