I was surprised to see your note about Major Taylor as he wasn't mentioned in the movie. If the attached bio is accurate, he only competed in one and came in 8th. Of course, this lack of success may have had nothing to do with his actual abilities and more to do with the racist issues of the time and, if the movie had discussed him, they may have had to devote a lot of time to discussing those issues and not cover other areas.
http://www.majortaylorassociation.org/more.htm
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.