The Wisconsin Off Road Series (usually WORS) is an off-road bicycle racing series in Wisconsin, United States. The series is billed as "America's largest state mountain bike racing series."
The series began in 1991 as six separate races that were connected by a points system and overall scoring. The series has evolved to a twelve-race season. The series has 17% female participation, which is far above the national average of around 9%.
The series has been sanctioned by the National Off-Road Bicycle Association since 2003, when it averaged over 800 riders per event.
There are five classes (listed from lowest to highest difficulty level)