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.