American Birkebeiner
（重定向自Birkie）
The American Birkebeiner (or Birkie) is the largest, and one of the longest (51 km Freestyle and 56 km Classical events) cross country ski races in North America. It debuted in 1973 and has been a part of Worldloppet as long as Worldloppet has been around. The two premier events are the 55 km (34 mi) classic and the 51 km (32 mi) freestyle race from Cable to Hayward, Wisconsin. Each year approximately 10,000 skiers participate in the Birkie, 26 km Kortelopet, and 12 km Prince Haakon events. The 43rd Birkie was held on February 20, 2016. The Birkie is a member race of the Worldloppet Ski Federation.