What is the Birkie?
- Spans 51 kilometers from Cable to Hayward for Skaters, and 55K for Classic Skiers
- North America’s largest cross-country ski marathon
- Attracts over 10,000 Birkie/Korte skiers
- Part of the Worldloppet circuit of 20 international ski marathons and part of the American Ski Marathon series of 13 races.
Source:Yahoo! Sports Report