Regiontog are long distance express trains operating on the main lines throughout Norway. There are different kind of trains used for these services, basically you will find two different variations: long-distance services from Oslo to Trondheim, Bergen and Stavanger as well as from Trondheim to Bodo are operated with either recently refurbished carriages or EMU.
They offer seats in 2nd class as well as special "NSB Komfort" seating, comparable to 1st class with wider seat pitch and free drinks and newspapers. All trains have a bistro, plugs and wifi, as well as special compartments for the disabled, children/families and pets. On shorter distance services other trainsets are used which usually only offer 2nd class and "Komfort" seating, plugs and wifi but no bistro car (but vending machines).
Regiontog trains are also running as night trains on the following routes: Oslo with Bergen, Trondheim and Stavanger as well as Trondheim with Bodo. They offer comfortable and modern sleeping cars and 2nd class coaches.
The sleeping cars have compartments with two comfortable beds. Power sockets and washing basin are available. You have to check in and get the key card to your compartment either at the departure station or at the restaurant/service coach in the middle of the train.
The 2nd class cars have regular seats in open-plan arrangement (same as on daytime trains) which can be reclined slightly. Passengers in seated accomodation get a free "night pack" with blanket, pillow, ear plugs and eye mask. Seat reservation is recommended.
A restaurant/service car is available in the middle of the train. You can get snacks and drinks there. インターレイル
The price is the same for all distances. If you travel with reservations, you will need one per connection. Example: a connection with change of train (ie Trondheim - Bergen via Oslo) will need just one reservation.
There is no compulsory reservation on Regiontog trains, however a reservation is strongly recommended especially for longer distances. If you want to travel without a reservation you can ask the conductor if and where there are free seats.
Holders of 1st class passes get a free reservation in NSB Komfort. Holders of 2nd class passes pay 50 NOK for a regular reservation but also have the possibility of booking a seat in NSB Komfort for 95 NOK.
Oslo - Bergen/Stavanger/Trondheim/Halden | Trondheim - Bodo | Lillehammer - Oslo - Skien | Dombas - Andalsnes | Oslo - Göteborg Regiontog 606 (RT 606): ベルゲン - ヴォス - ミュルダール - オスロRegiontog 476 (RT 476): ボードー - ファウスケ - トロンハイムRegiontog 605 (RT 605): オスロ - ミュルダール - ヴォス - ベルゲンRegiontog 745 (RT 745): オスロ - クリスチャンサン - スタヴァンゲルRegiontog 405 (RT 405): オスロ - リレハンメル - トロンハイムRegiontog 744 (RT 744): スタヴァンゲル - クリスチャンサン - オスロRegiontog 475 (RT 475): トロンハイム - ファウスケ - ボードーRegiontog 406 (RT 406): トロンハイム - リレハンメル - オスロ