There is a North American Enduro Tour.... www.NAETmtb.com. It is in its infancy but is on its way! It's a 7 race tour that many may not even know they are participating in...YET!!!! For 2011, Kokanee Crankworx Canadian Enduro, Oregon Super D Series (4 races), Ashland All-Mountain Challenge, and Trestles All-Moutain Enduro count towards North American ranking of Enduro athletes. The promoters of these events are working together to develop and grow this type of racing. The Oregon Super D Series is leading the charge with 4 awesome races around Oregon but as mentioned above the logistics for multi-stage enduros are expensive and requires a lot of staffing. Check out the North American Enduro Tour, and the Oregon Super D Series websites for more info on Enduro / Super D racing. www.NAETmtb.com , www.OregonSuperD.com