In the town of Valparaiso in Chile, a downhill mountain bike competition has been taking place for the last 10 years; the Valparaíso Cerro Abajo cup. What makes it different from many other downhill races is the location: this race takes place in the city streets and sidewalks.
This is one of the craziest videos I have ever seen. This is a POV helmet cam video, so if you don't do well with shaky cameras, consider this a warning.