To book accommodations, contact Norwegian State Railways at 011 (+47) 815 00 888 or visit their Web site (see Resources, below). Enter 'Oslo' in the 'From' field and 'Mosjoen' in the 'To' field. Choose a date and time to start your trip, and book a return trip at this time should you need one.
Decide whether you'd like to travel economy class (Ordinær) or first class (KOMFORT), and whether you wish to book a sleeper berth. The berth costs a bit more, of course, but if you can afford the expense it will be a lot easier than trying to sleep sitting up (and remember, the trip from Oslo to Mosjoen takes more than 13 hours to complete).
Enter payment and contact information (you have a choice of using your Visa, Mastercard, Diner's Club Card or American Express--they do not take Discover).
Collect your ticket to Mosjoen at any Norwegian State Railways (NSB) station from a ticket vendor or an automatic ticket machine. You may also choose to collect your ticket on the train, but this may present problems if you have chosen a train that requires a ticket before boarding.
