Starting in the south at Hell Station, which is located from Trondheim Central Station (Trondheim S), the Meråker Line branches from the Nordland Line. The latter crosses the river of Stjørdalselva on a truss bridge. It passes the closed Sandferhus Station before reaching Trondheim Airport Station ( from Trondheim S), which serves as an airport rail link and is situated below the terminal of Trondheim Airport, Værnes. Previously there was a spur from Sandferhus to Værnes and Øyanmoen. The mainline continues under the airport's taxiway and runway in the two Værnes Tunnels, the latter which is long, after which the line reaches Stjørdal Station ().