When the Greek musicians are being advised by the American naval officer on a possible national anthem to play, the naval officer plays 'The Star Spangled Banner', but claims it has no lyrics. In fact it did, and was in use by the U.S. Navy at least by 1889. Also, the naval officer hands sheet music to one of the Greeks, and it clearly has lyrics printed on it.
In the series, James Connolly is told by Coach Graham and the Dean of students at Harvard that he and Arthur Blake will be volunteering for the new U.S. Olympic Team as punishment for fighting with each other. In reality, Connolly was denied a leave of absence to compete in the Games. So, he dropped out and competed anyway.
In the series, it is mentioned that Edwin Flack was interrupting his studies at Oxford to compete in the Games. In reality, he was taking a month's holiday from his job at the accounting firm of Price, Waterhouse, and Company.
When athletes first competed in the Olympics, they only represented their clubs or their schools. They did not start participating on national teams or marching in a Parade of Nations until the London Games of 1908.
In an incident similar to the one with an over sized discus, Robert Garrett is seen trying to enter the Olympic Shot Put event with an over sized shot put. In reality, however, unlike the incident with the discus, which is very well documented, there is no record of a similar incident with the shot put ever having taken place.
In the series, three Greek flags are raised after the finish of the Marathon. However, it is not mentioned that the third Greek finisher, Spiridon Belokas was disqualified for riding part of the way in a carriage. His spot was awarded to Gyula Kellner of Hungary.