Factual error: When Vince Edwards is marking months off the calendar he marks months off on two consecutive years that have the same days of the week. That never happens.
Factual error: This film is set in the 1960's. The Ford transit van belonging to Russell, the group's roadie, is a facelifted 1971 model.
Factual error: When the race starts, the people are waving American flags with 48 stars: 6 rows of 8 stars each. However, in 1908, when the race took place, there were only 46 states.
Factual error: Cagey Joe's pullover definitely looks more 1976 than 1926.
Factual error: One does not simply walk (or run) onto or off a U.S. Navy ship. Every individual coming aboard stops at the head of the brow (gangplank to civilians), faces the ensign (flag) at the stern and salutes, then turns to face the officer of the deck (OOD), salutes again, and says, "Request permission to come aboard, sir." The OOD returns the salute and says, "Permission granted," whereupon the individual steps off the brow onto the ship. A similar procedure is used when leaving the ship, with the individual requesting permission to go ashore.
Factual error: The first shot of the calendar shows two days numbered as 20 and March ending on the 24th. In the following shot it's fixed.