The Global Relay Gastown Grand Prix is a criterium cycling race held in Gastown, the oldest neighbourhood in Vancouver, British Columbia, Canada. The race is part of BC Superweek, a series of nine races held over 10 days in July in the greater Vancouver area. Founded by a local dentist and bike racer, Roger Sumner, in 1973, the Gastown Grand Prix regularly attracted professional riders from across the continent along with crowds of 20,000 to 30,000 spectators.