Norway has a number of recognized nude beaches as well as a number of clothing-optional beaches. Here is how to find them.
On the outskirts of Oslo is Huk Beach with nude and non-nude sections. Rather than driving there, you have the option of taking a bus from the center of Oslo.
Also near Oslo, if you prefer not to go to Huk Beach, you can visit Langoyene Beach or Svartkulp Beach on Lake Sognsvann.
Consider Mauren Nude Beach by Alesund or Kollevagen near Bergen if you are in the western part of Norway.
Visit Ursetvika nude beach near Salten or Djubvika in the area of Trondheim if you are in the central or nothern areas of Norway.