Taxco. It's an old silver mining town built up the side of a mountain. Its streets and side walks are a maze of slick cobble stone pavers. Ten years ago a race started here, down the back alleys and steep steps of the city. In the past couple of years that race has picked up steam and now it is an event pulling in riders from across the globe. There is a stacked field of DH racers and freeriders. Because it runs through the heart of the city and does a fair amount of disrupting traffic, it has a simple two day format. Day one - practice. Day two - race and best trick. Racers took to the streets today to come to grips with, well, the lack of grip and bone rattling stairs.