Yesterday was held in Paris an event called the "Criterium Sauvage des Cascades". It's basically a race around the block, the circuit is about 1 km long and you have to cover it 10 times. Actually it was more an occasion of getting together and having a good time rather than actually racing. There were 3 or 4 couriers who went really fast, the rest of people (about 50) were kids and grown-up on their regular commuting bike just having a good time.
Look at the pics here: http://www.zananas-martinique.com/criterium/index.htm
They gave the winners hat (the only thing to win) to the little boy who did really well. He was the only kid who rode the 10 laps. Each time he was coming round he was acclaimed like a hero!