This video shows an insane downhill bike race held in Chile each year. Known as the The Valparaiso Cerro Abajo Race, it run through the streets of Valparaiso and incorporates jumps, ramps, sidewalks, and much more.
The whole thing is caught on helmet cam, which only adds to the craziness, as people cheer the rider on all the way to the end.
(I am told the dog is alright!)
Watch this full screen!