The announcer in Hopkinton at the start of the marathon says "Welcome to the 53rd running of the Boston Marathon". The 1954 Marathon was the 58th running.
The actual winner of the 1954 Boston Marathon was Veikko Karvonen from Finland. His finish time was 2:20:39.
The marathon route looks nothing like the true course, even considering the time period. There is no turn out of Hopkinton at the start, the final turn at the finish is a left--not a right, and the hill does not drop off to the right of Heartbreak Hill.