Ivar Formos Minneløp is a trail race held in Nordmarka, the forest area north of Oslo, during autumn. It offers distances suitable for both adults and children. The primary race options are 17 km, 10 km, and 3 km, in addition to a children's race, making the event suitable for families and runners seeking a challenging run in the woods.
The 10 km course follows a newer path through forest trails, featuring rolling terrain that requires consistent effort rather than steep ascents and descents. Organizers characterize the race as a rewarding exertion within Nordmarka's natural setting. A practical tradition associated with the event is the provision of technical running shirts, which have been well-received in previous years and can be ordered when registering.