Narrator
Charles Howard
Bicycle Supervisor
Tom Smith
Steamer Owner
Car Customer
Annie Howard
Land Broker
Sam (as Kingston DuCoeur)
Mr. Pollard
Mrs. Pollard
Young Red Pollard
Pollard Child
Charles Strub
Alberto Gianini
Mr. Blodget
Red Pollard
Dutch Doogan
Bug Boy Jockey
Frankie Howard
Boxing Match Referee
Marcela Howard
Marcela's Friend
George Woolf
Young Jockey
White Horse Trainer
Molina Rojo Woman (as Camillia Sanes)
Angry Trainer
Saratoga Trainer
Farm Manager
Sunny Fitzsimmons
Saratoga Jockey
Tick Tock McGlaughlin
Bugle Player
Santa Anita Track Announcer
Speed Dual Jockey
Reporter Max
Reporter Roy
Racing Tout
Reporter Lewis
Horace Halsteder
Samuel Riddle
Tick-Tock's Squeeze
Newsboy
Charley Kurtsinger
Pimlico Night Watchman
Tractor Worker
Baltimore Doctor
Radio Reporter Joe
Pimlico Starter
Pimlico Track Announcer
Seabiscuit's Vet
Clocker Man
California Doctor
Horse Vocals (as Gary Hacker)
Male Mariachi Band Leader
Male Mariachi Band (as Jesse Hernandez)
Male Mariachi Band
Male Mariachi Band (as Fernando Moreno)
Male Mariachi Band (as Pedro Hernandez)
Female Mariachi Band
Salvation Army Band
Blacksmith (uncredited)
Grip Dept (uncredited)
Race Spectator (uncredited)
Race Day Audience (uncredited)
Race fan in the stands (uncredited)