The Mobil 1 Presents Grand Prix of Mosport was the eighth round of the 2008 American Le Mans Series season. It took place at Mosport International Raceway, Ontario, Canada on August 24, 2008. Temperatures had reached a maximum of 27.1 °C (80.8 °F); with wind speeds of up to 9.9 kilometres per hour (6.2 mph) not unheard of throughout the day.

The Chevrolet Grand Prix is an annual IMSA WeatherTech SportsCar Championship race held every July at Canadian Tire Motorsport Park in Bowmanville, Ontario, Canada. The race originated in 1975 and is currently a two hour and forty minute race in order to fit the event into a television-friendly package. Previous editions of the Grand Prix were part of the World Sportscar Championship, the American Le Mans Series and the IMSA GT Championship.