I have seen insanity and this is right up there ~!

It happens on the streets of Valparaiso, Chile.
The Valparaiso Cerro Abajo Race is a legendary urban bike race and is more extreme than skydiving.
The rider must brave jumps, stray dogs, and flights of stairs along the steep downhill path.
The first person perspective provided by the excellent helmet cam lets us take in every glorious and frightening detail.