Can someone help with a 1980's movie title? The only things I can remember is that a guy was training for a gymnastics team in the woods, after some kind of family problems he races on his motorbike to save a little boy or brother from going off a cliff with his 4wheeler. Any ideas?

This is a rather feeble guess, but could it be American Anthem (http://www.imdb.com/title/tt0090631/), starring actual Olympic medalist Mitch Gaylord (snerk)?