The Valparaiso Cerro Abajo has a reputation as one of the most insane races in the world – and we’re not going to disagree in a hurry. 

Riders pit themselves against a downhill street course in Chile, heading off one-by-one against the clock. 

Gap jumps and wall rides come as standard… as well as a close run-in with some of the local wildlife.

Here, one rider straps on a helmet cam – thanks to comedian Dave Gorman for the nod on Twitter… as the funny man says, heart in mouth stuff.