Cross-country skiing enjoys a reputation as "the world's best aerobic workout." Major international races draw as many as 18,000 competitors, but there are hundreds of local "citizen" races with several dozen racers.
International Competition The World Masters Cross-Country Ski Association sponsors the Masters World Cup, which, in 2015 was held in Syktyvkar, Russia, February 4-12. The 2016 Masters World Championship was held in Vuokstti, Finland, March 14-19 For more information see http://www.world-masters-xc-skiing.ch/mambo/index.php/english.html
The organization that promotes and supports cross-country skiing for Masters in the United States is American Cross-Country Skiers ("AXCS")
American Cross-Country Skiers
PO Box 604
Bend, Oregon 97709
Phone: (888) 543-7223