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.

Factual error: Two men are trying to start a John Deere Model D tractor, which backfires, startling the horse. The wrong sound effect is used; it sounds like a V8 engine being turned over by an electric starter. The tractor's flywheel, on the left side, is shown stationary. Turning the flywheel by hand is the usual starting procedure for a JD tractor of '30s vintage. For over 40 years John Deere tractors used a two-cylinder engine, which make a distinctive popping exhaust sound. The movie is right on one thing, JD tractors could backfire.

Visible crew/equipment: When Red has the accident and the horse is trying to get on its feet there is a clear view of the stuntman's face.

Factual error: Jockeys did not wear goggles and their skullcaps did not have chinstraps in the 1930's. Protective equipment for jockeys was practically non-existent during Seabiscuit's racing days.

Factual error: Pollard did not lose his sight in a fight, as the film suggests. He lost it when he was galloping a horse for exercise and a horse going in the opposite direction kicked up a clod of dirt that struck him at the base of skull and knocked out the cerebellum on his left lobe. (right side, left lobe).

Continuity: When Seabiscuit races War Admiral he has a white snip on his nose and no white markings on his feet, but in the final race of the movie there is no white snip on his nose and that horse has white socks (coloring) on his front feet.

Revealing: In one scene we get a view of people standing beside a vintage automobile. A license plate is mounted on the vehicle's rear fender and we get a clear view of the back of the license plate. The plate appears to be made out of aluminum and pressed into the plate is a relief image of an antique automobile. What we are seeing is a modern license plate issued by some state for a vintage automobiles. (In Iowa a car must be at least 25 years old to qualify for such a special plate.)

Factual error: In the scene where Red Pollard is walking hots, he is leading the horse around on a mechanical walker which did not exist at the time.

Other: When Marcela and Howard are viewing Seabiscuit for the first time (when he's weaving all over the place) it looks like it was done before as Seabiscuit follows a thin ribbon of disturbed ground that is weaving in and out. Its unlikely any other horse would be weaving like that.

Factual error: When Red Pollard is showing the doctor his homemade brace, his bare leg shows no sign of having been nearly severed or of undergoing multiple surgeries. There are no scars, atrophied muscles, or discoloration of any kind. In reality, Pollard's leg was permanently disfigured.

Factual error: In the final race, one of the horse's saddle pad flips up in the wind and reveals a synthetic-type foam rubber lining. This was unavailable in 1938.

Factual error: In the final race, Red Pollard is shown with a number 9 on his sleeve, indicating Seabiscuit's starting position. In fact, Seabiscuit had the number 1 starting position (this can be seen on historical footage).

Factual error: The flat top inside rail at Santa Anita racetrack is a new style safety rail.

Continuity: When Tick Tock McGlaughlin watches Seabiscuit being prepared for racing again he pretends to be reading a newspaper. When Charles and Tom talk to him he is holding the newspaper open with both hands, but at the end of the conversation he is suddenly holding the folded newspaper in one hand.