Factual error: In the shot of the infield at the Saratoga racetrack several Canada geese are shown landing. However, the calls inserted on the soundtrack are the quacks of mallard ducks not the honks of Canada geese.

Factual error: Many of the main characters are using modern-day binoculars (black, plastic) throughout the entire movie.

Factual error: In the shot where Pimlico racetrack is shown and the dateline shows November 1, 1938, the Maryland flag is upside down. The black and gold squares should be at the inside top and they are not.

Continuity: In Red's first race after his accident (the last race in the movie) Seabiscuit is trailing behind for some time. When the camera shows him from the front he gallops across virgin turf in spite of all the other horses in front.

Continuity: In the race for the $100,000 purse (that Rosemont wins), just after Seabiscuit takes the lead, there's a closeup of Seabiscuit's head and Pollard's right leg - Pollard is wearing the brace he made later in the movie after his leg was shattered. Obviously, the shot was taken from those filmed for the Santa Anita race later in the film.

Factual error: In the scene where Seabiscuit is weaned from his mother, the narrator says that he was six months old at the time. However, the foal used in the movie is less than one month old.

Revealing: After William Macy interviews Jeff Bridges and when the narrator is describing Seabiscuit's fans (the scenes are about an hour apart), you see shots of people in trees. They are the same shot.