When Joe opens a homemade card, there are two flowers inside. When shown again the flowers are missing.
The newsreel in the movie says Jessie Owens is from the University of Ohio. While there is an Ohio University in Athens, Ohio, he was actually a student at The Ohio State University.
The railway send-off scene to Poughkeepsie, NY, shows an English Great Northern Railway train and not an American Great Northern Railway train.
When the team is to travel from one part of the US to another via train, they board a British train with doors at each compartment, pulled by a British steam locomotive.
Joe's father in America is shown following the race on a radio. The radio is a British-made Bush radio rather than an American model.
Joe Rantz and his crew are portrayed as learning to row in the Olympic season. They commenced for the 1934 season, winning the 1934 freshman 8 and JV in 1935.
The railroad cars and trains in "Seattle", "Poughkeepsie", and along the "Hudson" River are all British.
In the scene where coach announces he's going with the JV team, the band is using white fiberglass sousaphones. They weren't invented until the 1960's.
The water used for both Lake Washington and Poughkeepsie is not filmed there. Lake Washington is HUGE and has no narrow waterways as in the movie. It appears they filmed from one bank for Lake Washington scenes and the other scenes from Poughkeepsie.