The Flintstones: Jogging Fever (1981)

Name: The Flintstones: Jogging Fever
Genre: Animation, Comedy
Released: 1981-10-11
Duration: 30 min
Cast: Henry Corden, Mel Blanc, Jean Vander Pyl, Gay Autterson, John Stephenson

After failing his annual physical, Fred wants to prove to everyone that he is in shape, so he decides to become the first citizen of Bedrock to enter the Rockstone Marathon.