Line 3 Overview
Line 3 runs from Kolsås Station to Mortensrud Station and connects 34 stations of the Oslo Metro network. The western Kolsås Line originally opened in 1924 as a suburban railway, while the eastern section was later integrated into the metro system. The route passes through important stations such as Majorstuen, Stortinget, Grønland, Helsfyre, and Brynseng before continuing towards Mortensrud in southeastern Oslo.
Oslo Metro Map 2026
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Other Lines in Oslo Metro
Frequently Asked Questions — Line 3
Line 3 has 34 stations on the Oslo Metro network.
Line 3 runs between Kolsås and Mortensrud.
Line 3 is a Metro line operated under Oslo Metro.
Line 3 is part of the Oslo Metro transit network.