President's Trophy Races at Mosport Park. June 29-30, 1985
Hosted by the Canadian Racing Drivers Association (CRDA) and the Western New York Region of the Sports Car Club of America (SCCA)
Group 1 E, F Prod / GT-3 / C, D SR / GT-2 (CASC)
Group 2 GT-1 (CASC) / A, B SR / Closed Wheel / GT-1, 2 (SCCA)
Group 3 Open Wheel / Formula Atlantic / Continental / Formula 2000
Group 4 Formula 1600
Group 5 Formula Vee / Formula Four
Group 6 Showroom Stock / A, B, C, Stock Prod / Honad / Bilstein / Renault / Improved Touring
Group 7 G, H Prod / GT-4, 5 / GT-3 (CASC) / Sporots Renault
Group 8 Formula 440 / Super Kart
Group 9 Canadian Tire Formula 2000
Group 10 Honda Michelin
Group 1 E, F Prod / GT-3 / C, D SR / GT-2 (CASC)
Group 2 GT-1 (CASC) / A, B SR / Closed Wheel / GT-1, 2 (SCCA)
Group 3 Open Wheel / Formula Atlantic / Continental / Formula 2000
Group 4 Formula 1600
Group 5 Formula Vee / Formula Four
Group 6 Showroom Stock / A, B, C, Stock Prod / Honad / Bilstein / Renault / Improved Touring
Group 7 G, H Prod / GT-4, 5 / GT-3 (CASC) / Sporots Renault
Group 8 Formula 440 / Super Kart
Group 9 Canadian Tire Formula 2000
Group 10 Honda Michelin