2. Go Mountain Hiking
This is one of the best adventure sports in the world and can give you a huge adrenaline rush. Imagine doing the same thing with a friend! The two of you will be in a world of your own with very few people there to disturb you. You can create a bagful of memories all by yourself and do not forget to take pictures along the way (whenever you can) so that you can revisit those same memories later. Another great thing about this adventure sport is that when you have finally been able to scale the top of a mountain, you will get a very satisfying feeling and sense of achievement in the company of your best friend. There are very few things that can replace or better that feeling.