in the stoppage starting in the rear. The winner of the event is the rider who finishes first in the feature event. Events attract over 10,000 spectators. Typically, a snocross event uses the standard short-track motorsport standard of qualifying rounds, heat races, consolation final, and the feature. Major events X Games, Buttermilk Mountain in Aspen, Colorado Duluth Nationals, Duluth, Minnesota. Held the weekend after Thanksgiving every year since its inception. The unofficial start to winter and the official kickoff to the Snocross racing season. Riders from New England, Canada and points beyond will join the ISOC teams in Duluth to get a jump on their upcoming seasons. Snowcross World Cup Finals at Lugnet Riksskid Stadium in Falun, Sweden Grand Prix Ski-doo de Valcourt in Valcourt, Quebec, Canada, in February. World Championship Snowmobile Derby at Eagle River, Wisconsin, United States on the third weekend in January. The snocross track is quite small yet still exciting and is constructed inside the famed high-banked half-mile ice oval. Snocross by region United States The national sanctioning body for snowmobile snocross racing is International Series of Champions (ISOC), owned by John Daniels. ISOC sanctions the AMSOIL Championship Snocross Series (ACS) national tour, along with regional series in Wisconsin, Minnesota, and Michigan. ISOC replaced Joe Duncan's World PowerSports Association (WPSA) starting with the 2008–09 season. The ACS will consist of eight points-paying races in 2015–16, beginning with the AMSOIL Duluth National at Spirit Mountain on November 27–29. Highlights from ISOC's National events are televised on the CBS Sports Network. In the northeastern United States (New England and New York), Rock Maple Racing sanctioned snocross racing from the winter of 1991-92 until being sold (for the second time) in May 2010. New owners Eric Scott and Bob Roscoe chose to form the East Coast Snocross (ECS) series to carry on the tradition RMR had created. Now owned by Mass. native Kurt Gagne, East Coast Snocross (ISOC's eastern affiliate) will sanction eight points-paying events in 2019, along with one ice drag event. Previous years have seen hillcross events sanctioned as well. Snowmobile racing is big in northern New England where snows are deep and temperatures often remain cold for weeks. ECS races throughout New Hampshire, Maine, Massachusetts, Connecticut and New York. Mountain West Racing sanctions on eight events in northern Rocky Mountains states. There is a snocross track in Wauconda, Illinois. It is home to the Winter Thunder