Couch to Marathon Training Plan ~ by BoldlyLuckyCheesecake [20,087 words; M]
Bucky Barnes is missing something. Since he's gotten out of the army (not a choice he got to make), he's checked off all the boxes to Successfully Adult. But between work and seeing his sister and soon-to-be-parent friends he's gotten into a rut.
Maybe joining a gym for veterans and being paired up with human Adonis Steve Rogers is what he needs to fill that missing something.
(basically a meet-cute involving a gym, excessive amounts of running, and a cat because I'm completely self-indulgent and just want them to be happy!)