Canada Jam was a rock music festival concert held at Mosport Park in Bowmanville , Ontario Canada , about 100 kilometres east of Toronto , on August 26 , 1978 . The festival was produced by Sandy Feldman and Leonard Stogel , who produced California Jam and California Jam II , and was sponsored by Carling O'Keefe . It attracted over 110,000 fans , making it the largest paying rock event in Canadian history at that time . The Molson Canadian Rocks for Toronto a.k.a. " SARSfest " featuring the Rolling Stones and AC/DC eclipsed that mark with an audience of 450,000 people on July 30 , 2003
California Jam II
California Jam II
Canada Jam