Crazylegs

Every April the University of Wisconsin athletic department organizes its fundraising race called Crazylegs. For about $20-$30 (depending on when you register), you can particpate in the 8k race or 2-mile walk. Participants (all of whom get a free Crazylegs T-shirt) start at the Capitol, wind their way through campus and end at Camp Randall Stadium.

It's particularly amusing to pass all the students outside their apartments as they cheer you on and play "Chariots of Fire." Also, many runners/walkers wear costumes.

The finish line is one big party. The UW Marching Band performs, as well as another band, and there is free beer.

More info at http://www.crazylegsclassic.com/.