TRAVEL

If you're going to stay in the city centre of Oslo, the best travel option from Gardermoen is the Airport train (Flytoget). You can buy a ticket in advance on your phone. 

If you're to stay a bit outside  the city centre of Oslo, the best travel option from Gardermoen is sometimes the Airport bus (Flybussen). You can buy a ticket in advance on your phone. 

If you need to take the subway/bus/tram to the workshop venue. The best option for a long weekend is a 7 day card.