We really can't figure out how these guys go so fast through such narrow gaps, especially when there are screaming fans, roaming dogs and handle-bar snatching rails on every corner.

This vid is from the 2013 Red Bull Valparaiso Cerro Abajo (Chile) downtown race which took place last weekend and was won by Colombian Marcelo Gutierrez with Filip Polc (Slovakia) in second and Antonio Lieva (Chile) in third.