Canadian Tire Motorsport Park
Ontario, Canada
Old-school, flat-out, almost no run-off — a fearless ribbon through the Ontario woods.
ProvisionalOntario, Since 1961.
Canadian Tire Motorsport Park — still widely known by its original name, Mosport Park — sits on Concession Road 10 near Bowmanville, in the municipality of Clarington, about seventy-five kilometres east of Toronto. The full Grand Prix circuit runs 3.957 kilometres over 10 turns, clockwise, cut through hilly Ontario woodland with real elevation change and minimal run-off — a layout that has barely been softened since it opened in 1961. Drivers who know it tend to describe it the same way: old-school, fast, and entirely unforgiving of a mistake, closer to a European road circuit than most of its North American contemporaries.
Old-School And Unforgiving.
Moss Corner is named for Stirling Moss, who suggested splitting the circuit's planned hairpin into two separate corners. Whites Corner, the 90-degree right at Turn 10, runs over a tunnel cut beneath the track. Between them sit the Esses, a flowing, multi-apex sequence, and the Mario Andretti Straightaway, a three-quarter-mile run out of Moss Corner that is the fastest part of the lap — the one place a driver gets to breathe before the track closes in again.
A Driver's Track.
Opened in 1961, Canadian Tire Motorsport Park — Mosport to everyone who loves it — is one of the last great old-school circuits left: fast, undulating and unforgiving, with corners taken on faith. It has hosted Formula 1, Can-Am and the world's best for six decades. A driver's championship belongs at a driver's track.
High Summer, Lakeside.
High summer on a true driver's track: garage suites, lakeside lodging an hour from Toronto, and a grid of members' machinery.
A Grand Prix Circuit From The Start.
Mosport Park opened on June 25, 1961 with the Player's 200, won by Stirling Moss. It hosted the Canadian Grand Prix on and off from 1961 into the late 1970s, was a regular Can-Am venue from 1966 until the series folded in the 1980s, and has run Trans-Am for decades. It ran the American Le Mans Series from 1999–2013 and has hosted the IMSA SportsCar Championship since 2014, with only the 2020 and 2021 events lost to the pandemic — more than six decades of top-level sports car racing on essentially the same layout, under a series of names but the same demanding piece of Ontario road.
The Founding Class Is Open — Once.
This circuit is one stop on the long bet. The members who build it now write the first chapter.