Norway
You can camp anywhere outside of the cities except for the home pasture of a farm and fields which haven’t been harvested, so you don’t need to worry if you don’t make it to your next intended stop.
There are many campsites, however, and most also have basic cabins sleeping two, four, or more people — useful for the occasional evening of lounging around and drying out.
www.camping.no is an excellent website listing all campsites in Norway.
An Island in the Oslofjord. There used to be a camping site there (The Rough Guide 2002 gives a phone number but it no longer exists) but now you just catch the ferry out and do your own thing. It's safe as houses. Frequented by overnight school expeditions and work parties, it's still big enough to avoid them all and enjoy great views of Oslo and the surrounding hills. Plenty of tracks for walks as well. A nice break from the city which all feel the same after a while. Bring your own food and drink.
Catch the Vippitengen bus outside the train station. This brings you to the docks where you get the ferry. You can get a special city travel pass that covers all of this. It's fairly cheap for Norway.
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