On April 7, 2021, IMSA announced the cancellation of the event at Canadian Tire Motorsport Park because of Canadian quarantine restrictions, replacing it with a standard-distance (three
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On April 7, 2021, IMSA announced the cancellation of the event at Canadian Tire Motorsport Park because of Canadian quarantine restrictions, replacing it with a standard-distance (three hour race, 2 hours, 40 minutes of racing format) at Watkins Glen International on Friday, July 2, dubbed the "WeatherTech 240 at The Glen."
