Fred Mace
— The Speed Demon
Kate Toncray
— The Speed Demon's Wife
Dell Henderson
— Racing Official
Jack Pickford
— The Speed Demon's Son
Sylvia Ashton
— The Speed Demon's Wife's Friend
William J. Butler
— In Crowd
Edward Dillon
— Racing Spectator (as Eddie Dillon)
Harry Hyde
— A Judge
Charles Hill Mailes
— Kudge (as Charles H. Mailes)
Mack Sennett
— Minor Role (unconfirmed)
Charles West
— Racing Spectator (as Charles H. West)