Oslo Trail Challenge

Description

The Oslo Trail Challenge is a terrain ultra race in the forest areas of Nordmarka, Lillomarka and Romeriksåsen. The trails are not marked and the participants themselves are responsible for following the trail, either by using GPS tracks or maps. The race is self-support and it is not permitted to receive help, food or drink along the way. Exceptions are participants in the 200 km who can have a helper and a drop bag when turning at Mylla dam halfway.