The British Columbia Breeders' Cup Derby is a Canadian Thoroughbred horse race run annually during the third week of September at Hastings Racecourse in Vancouver, British Columbia.Open to three-year-old horses, the Grade III is run on dirt at a distance of 1⅛ miles (9 furlongs) and currently offers a purse of $188,475, the richest and most important race at Hastings Racecourse.