Østmarka naturreservat has 25 named peaks. The highest is Tonekollen at 368 m. Other notable peaks include Mørkåshøgda, Baråsen and Grinderkollen.
There are 25 named mountains in Østmarka naturreservat. The highest and the most prominent mountain is Tonekollen.

The highest peak in Østmarka naturreservat is Tonekollen, at 368 m.
Notable peaks in Østmarka naturreservat include Tonekollen, Mørkåshøgda, Baråsen, Grinderkollen and Kåterudhøgdene.
