For 3.1mi's you are hosed down with various colors, by the end you are your own piece of modern art. The closest race is in D.C. , Sept 22nd. I totally want to do this provided 1. I remember and 2. I register.
The Color Run: Such a cool idea! Run a 5k in a white t-shirt and by the end of the race you're not only covered in sweat, but lots of pretty colors to hide it! :P If only the locations weren't so far away. :(