In one scene, Bill Vigars refers to Canada Day, the July 1 holiday commemorating the Confederation of Canada. This may be perceived as an anachronism, as the holiday was not officially known as Canada Day until 1982; in 1980, its official name was still Dominion Day. However, it should be noted that informally, many Canadians were already referring to the holiday as Canada Day; the official name change *reflected* an already existing usage.
When Darryl Fox joined Terry and his friend in Eastern Canada he brought music by Ratt and Anthrax to listen to. Ratt and Anthrax came out in 1984, four years after Terry's run.
During the opening scenes in Newfoundland, The Rooms are visible in the background. The Rooms were not built until 2002-2004, 25 years after Terry Fox's run.