Tåsentiern is a 10 km race held in Tåsen, a neighborhood in Oslo, starting and finishing in Havnabakken. It takes place in late August, beginning in the morning. The course includes 300 meters of elevation gain, though organizers classify its difficulty as easy, positioning it as a local, community-focused run rather than a demanding mountain race.
PopUpRuns and Tåsen Turlag are the organizers. Their own description emphasizes enjoyment: jovial, very friendly, and appropriate for participants of all fitness levels. Both beginners and experienced runners are explicitly welcomed. The start and finish points are conveniently located near bus and metro lines, facilitating access without a car.