The Railrodder (Buster Keaton) reads a newspaper in London, England. A full-page ad proclaiming "SEE CANADA NOW!" catches his attention. He promptly throws the newspaper away and jumps into the Thames. He subsequently reemerges on the east coast of Canada at Lawrencetown, Nova Scotia, having apparently swum across the Atlantic, where he is greeted by a sign indicating the direction to the other side of Canada, 3,982½ miles away.
The Railrodder starts his long hike, but soon finds a one-man, open-top rail maintenance vehicle, commonly known as a "speeder", parked on a rail track. He sits in the driver's seat intending to take a nap, but he accidentally puts the vehicle in gear, and it speeds off down the track.
In a series of mini-adventures shared by the Railrodder and the motor car, the vehicle (with an apparently inexhaustible fuel supply) follows the Canadian National Railway line across Canada. En route, the Railrodder is shown making breakfast, acting as a maid, and even doing laundry, never once intentionally stopping the vehicle (though he later does stop in order to obtain camouflage so he can do some bird-hunting). A running gag involves a storage compartment in the vehicle which seems to be infinite on the inside, as he pulls out everything from pillows and a bison fur coat to a full tea service. Along the way he also has some close calls with locomotives and even other speeders coming the other direction, but emerges harm-free each time.
The Railrodder finally arrives at the West Coast. After taking in the view for a few moments, he gets ready to start the long ride back, only to discover his rail car has been taken by a Japanese gentleman who has just emerged from the ocean—presumably the Strait of Georgia—and has decided to take his own tour of Canada. With a shrug, the Railrodder starts walking down the long track.
The Railrodder was produced by the National Film Board of Canada with principal photography being completed in 1964. A "behind-the-scenes" documentary short film that was released likely contains the only known footage of Keaton working behind-the-scenes on a film.
The Railrodder was made with the cooperation of the Canadian National Railway, while filming also took place on Canadian Pacific Railway, Great Northern Railway and Pacific Great Eastern Railway lines. An acknowledgment of the cooperation of railroads was given as a final title credit.
Concurrent with the production of The Railrodder, the National Film Board produced a documentary entitled Buster Keaton Rides Again which combines behind-the-scenes footage during the fall of 1964, filmed in black-and-white, as opposed to the short film itself, which is in colour. With a running time of 55 minutes, it is more than twice the length of The Railrodder. The documentary includes retrospective footage of Keaton's Hollywood career. Keaton and Gerald Potterton, his director, discussed and occasionally argued over gags in the film with the director concerned about the safety of his star. During the filming of The Railrodder, Keaton celebrated his 69th birthday. He also had the opportunity to meet fans across Canada.
The motivation behind making The Railrodder with Buster Keaton, was that "Critics were rediscovering and wildly praising his great silent comedies of the '20s." Produced primarily made-for-television on the Canadian Broadcasting Corporation (CBC), and after broadcast, the film was made available on 16 mm to schools, libraries and other interested parties. The film was also made available to film libraries operated by university and provincial authorities.
The Railrodder was submitted to the 1965 Berlin International Film Festival where Gerald Potterton won Honorable Mention in the Short Film category.
The Railrodder and Buster Keaton Rides Again are available for free streaming on the National Film Board's website as well as on DVD. In addition it is also on the NFB's YouTube channel. In Canada, the NFB itself markets the DVD, while Kino Video distributes the film in the United States.