One of my other hobbies is Cycling, and the fall brings with it the Cyclocross season. This sport originated in Europe (Belgium I believe) as a way for road cyclists to train in the off season. The easiest way to explain it is like 'light' mountain biking on road bikes with knobby tires. (an over simplification, I know). Cyclists ride laps over a variety of terrain, gravel, grass, pavement, mud, sand, etc and may have to dismount and carry their bikes over obstacles like stairs. I usually participate, but the first informal event of the season, had me using my camera instead of my bike.