The Czech film industry has produced a movie on Emil Zatopek finally. David Ondricek has directed the film "Zatopek" with Vaclav Neuzil and Martha Issova playing Emil and Dana Zatopek and James Frechville playing Ron Clarke. The trailer can be seen at this link: Zatopek From what I've seen of the trailer, the actor Vaclav Neuzil has done a remarkable job of replicating Zatopek's form. As the film progresses in time from his days working in the Bata Shoe factory before the war to running in Helsinki in 1952, Emil's hairline recedes which I think is very authentic as well.
An interview with the director and two of the actors can be seen at Interview with director and actors of Zatopek Be warned, this website "Deadline" on which the interview appears is a bit clunky and littered with advertisements that tend to get in your way. The interview is conducted by Nancy Tartaglione and appeared November 20, 2021. The film has been selected to be in the foreign films category for the Academy awards in 2022. How we can see it is anyone's guess. If you find it on a site like netflix, let us know.