I spent hours this weekend biking on some awesome bike trails. And camped at a lovely state park this summer. And walked sidewalks and trails for endless hours in my city.
How about libraries too? Playgrounds for the mind and spirit.
This gave me a sort of questionable idea, but it'd be sweet if at the start to some bike trails they had a little parks & rec office or something where folks that don't have bikes (whether for financial or basic space reasons) could rent them/lend them out to ride along the trails. Maybe some more well-funded areas already have something like this?
I know some places will rent out bikes to folks, but I dunno how affordable that tends to be.