Cyclocross racing is a big sport in Europe. The typical cross bike is similar to a road bike, except the tires are a bit bigger and more aggressive than road tires. The course is a loop with obstacles and riders compete to see how many loops they can do in a certain time. I used to have a cross bike and raced little bit, however; I sold it before coming to law school. There was a Halloween cross race, so I put my Hooters uniform over my cycling clothes and road my mountain bike. I came in first in the beginner category, but did not stay for the awards ceremony because I needed to hit the books.
Passing guy in kilt. 
Finish line
You're my hero!