I've often said that we need a "running movie" that's akin to what the movie Sideways was to wine. Yes, the movie is about two friends going to the wine country, and one of them loves good wine, but the movie wasn't ABOUT wine.
The movie was about these characters and what they were going through. We need a movie about runners, but not necessarily about running.
Actually that is what "Chariots of Fire," was.
I'd bet the story of John Walker, Rod Dixon and crew racing and partying / shagging their asses off across Europe would be a good movie.