 The Cup is a handmade silver cup that not only recognizes future and past winners of the IWK 250 but also recognizes the winners of the annual Riverside 250 from 1977 to 2006 with plaques on the base.The traditional IWK 250 Trophy Presented by Steve Lewis Auto Body will continue to be awarded alongside the John W. Chisholm Memorial Cup.The primer event at Riverside is the IWK 250.