Gaustad is a rapid transit station of the Oslo Metro's Holmenkollen Line. It is situated Gaustad neighborhood of the Oslo, Norway, borough of Vestre Aker. Located 4.7 kilometers (2.9 mi) from Stortinget, the station is served by Line 1 of the metro every fifteen minutes. Travel time to Stortinget is ten minutes. The National Hospital and several research institutes fall within the station's catchment area.

The Sognsvann Line is a rapid transit line on the Oslo Metro of Norway. It branches from the Common Tunnel at Majorstuen and runs 6.0 kilometers (3.7 mi) to Sognsvann. After Ullevål stadion, the Ring Line branches off. The Sognsvann Line serves the northwestern and northern neighborhoods of Oslo, mostly within the borough of Nordre Aker. The line is owned and maintained by Kollektivtransportproduksjon and has nine stations. The western end of line 5 serves the entire line. Line 4 and the eastern end of line 5 serve the southern part of the line up to Ullevål stadion before branching off and continuing along the Ring Line. This gives an average five-minute headway on the southern part and an average fifteen-minute headway on the northern part of the line.