This hike takes you through the lush forest of Nordmarka, past Øyungen lake, and up to the viewpoint on top of Mellomkollen, which offers great views of Oslo and the surrounding forest. Difficulty level: Medium Distance, one way: 12.3 kilometres (7.7 miles) Elevation change: 500 metres (1,640 feet) Time consumption: 2,5–3,5 hours Transportation: From Jernbanetorget, take bus 54 (Kjelsås) to Godals vei. Switch there to bus 51 (Maridalen) and exit at Skar. Read more information about this adventure on Outtt. Download the Outtt app from Google Play or App Store for more outdoor activity suggestions in Oslo.