what is an xc mountain bike
A cross-country mountain biker on a trail in Utah. Cross-country (XC) cycling is the most common discipline of mountain biking.Cross-country cycling became an Olympic sport in 1996 and is the only form of mountain biking practiced at the Olympics.ross-country bicycles are some of the lightest mountain bikes, typically between 7 and 16 kilograms (15 and 35 lb).