I do not have any official hobbies, but if I did, these would be some of them.
Bicycles I ride bicycles alot and have several bikes. I have had a lot of fun riding with my family and friends and meeting new friends. It is fun to ride and explore.
Remodeling I have built a house and remodeled others. Most recently, I was part of a group that replaced windows in the Harney Peak Lookout in the Black Hills of South Dakota.
Hiking This is so much fun that there is a whole section devoted to this topic. I will not duplicate it here.