I raced Enduro's for years. An Enduro, for Endurance, is a cross country race, much like a motocross but the course is unknown, you follow arrows, and is anywhere from 75 to 125 miles. I owned a lot of bikes but the one I raced was a 250 cc Penton. Very specialized bike, they did not make anything for the street. All high-powered, high-quality machines for racing Enduro's and Six Day Trials. I'm too tall to have been competitive but nothing was more fun although, after I got the Penton, I did finish a lot of races.