Gävle to Stockholm train with SJ

Mälartåg is a Swedish train company from the Mälardalen region operating in the Stockholm, Sörmland, Uppsala, Västmanland, Örebro and Östergötland. Mälartåg's train fleet consists of double-deckers and smaller regional trains with a maximum speed of 200 km/h.

Vy, formerly known as Norwegian State Railways (NSB), is a government-owned railway company that operates most passenger train services in Norway, as well as many bus services in Norway and Sweden. Vy offers intercity, regional, and commuter train services, connecting major Norwegian cities like Oslo, Bergen, and Trondheim, and also provides an international route between Oslo and Gothenburg, Sweden. Vy's train fleet includes electric multiple units like the Class 69, 72, 74, and 75 for commuter and regional services, and traditional locomotive-hauled trains for some intercity routes. Passengers can choose from various ticket types, including Single, Season, Lowfare, and Flex, with options for different comfort levels such as Plus, PlusNight lie-flat seats, and Sleeper compartments for overnight travel. Many trains offer amenities like free Wi-Fi, power outlets, and dining cars.

SL (Storstockholms Lokaltrafik) is the public transport authority responsible for buses, underground trains, commuter trains, trams, and certain ferry lines in Greater Stockholm, Sweden. SL's network uses a unified ticketing system, and the organization contracts with various companies for the operation and maintenance of its services. SL also offers commuter rail connections to Arlanda Airport and tram services to Bromma Airport.