By car - Only 2 hours from Sandvika on good roads, E16.
By bus from Oslo, Bergen, Lillehammer - http://www.nor-way.no/
If you want to ski in the best slopes in Valdres, drive off E16 by Aurdal Church and follow the sign to Aurdalsåsen (Aurdal Fjellpark, Danebu Kongsgaard and Valdres Alpinsenter).
Follow Danebuveien until you see the sign to Valdres Alpinsenter and Alpin Apartments.
Turn right and have a wonderful day of skiing!