How about a hike to the stars and catching the sunset on the way up? Hiking in the woods in the cool, crisp night air can be one of the most amazing and refreshing experiences you can have. Aside from it being a perfect way to avoid the midday heat, you get to enjoy the sunset colors of gold, red, and orange decorating the deep forest.
Skate on the frozen waters of Lake Drevviken. Let your inner child run free in a natural ice skating rink in the Stockholm wilderness. You can forget about the city below and just float on the ice.
Forest Orienteering is a fantastic sport of finding your way through a forest, bypassing obstacles, with a map and compass in hand. It originated from the Scandinavian forests and has become a popular outdoor activity in Stockholm. You can learn basic compass usage and navigation from orienteering.