by Robin McGee Whether you are running-impaired or just looking for a low-impact aerobic workout, cycling is a great way to train in the summer and fall. Road and mountain biking provide a low impact way to cross train and help you build up your base for ski season. Road biking's smooth, repetitive nature is similar to the ease and fluidity of classic skiing and can be a great way to build aerobic fitness without stressing your joints. Cross-country mountain biking on varied terrain is perfect to fit in some intervals and enjoy the trails. Additionally, the quick descents and technical terrain...

