Big forest region in northern Oslo with ample outdoor recreation opportunities all year round. The routes in Nordmarka are usually well-marked, but a map is recommended for longer distances. Winter activitiesIn winter there are more than 450 km of prepared, red-marked ski trails in Nordmarka, and some of them are illuminated in evenings. Summer activitiesIn the summer you can find nice, blue-marked tracks for hiking, biking routes and idyllic lakes for swimming. CabinsSeveral of the cabins in Nordmarka are open to the public, either to take a break, enjoy a meal or spend the night. Most of them are owned and operated by the associations DNT Oslo og Omegn, Skiforeningen and Bymiljøetaten (the Municipality of Oslo). Facts about NordmarkaArea: 430 square kilometresHighest peak in Oslo: Kirkeberget, 629 metres above sea levelHighest peak in Nordmarka: Svarttjernshøgda, 719 metres above sea level (located in Oppland County)