i might be guilty to talk about sport animes, but seriously kaze ga tsuyoku fuiteiru (or run with the wind) is one of the best in this category.
maybe because it's more down to earth or just because i can relate a lot with them (i'm also part of a track club), but either way, the struggles, the mindset are just so real and honestly can inspire a lot of people.
it's basically a bunch of adults with zero to none experience in the track field (save 3 characters) that tries their best to do a fucking marathon. it's hard to start an activity from the bottom when you know there are a lot of people who do that for years.
i often feel discouraged in continuing training in my club, because my teammates are part of it since they were kids and i joined like three years ago. after watching this anime i know i'm capable of being as good as them.