>>2114821If you want to workout outdoors then calisthenics is yout best bet and its cousin: climbing. Hang rings from a tree and get /fit/ or find a big ass rock and climb it a million times. Rings weigh next to nothing and are easy to carry on a walk.
If you want to do a profitable activity while getting /fit/ then landscaping or outdoor carpentry for sure. Digging, building decks, roofing, moving material. Just 8 hours straight of physical excercise while working in gardens, pretty good desu.
If you just want to go out then hiking, trail running, etc would be good as well.
