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.
Henry Corden
Fred Flintstone (voice)
Mel Blanc
Barney Rubble (voice)
Jean Vander Pyl
Wilma Flintstone / Pebbles Flintstone (voice)
Gay Autterson
Betty Rubble (voice)
John Stephenson
Frank Frankenstone / Mr. Slate (voice)
Wayne Morton
(voice)
Frank Welker
Dino (voice)
