Check out this amazing video showing the winning downhill run by mountain biker Marcelo Gutierrez over a course carved out of some very narrow urban streets in mountainous Chile during the 2013 Valparaiso Urban Downhill race. The video, shot from a first person perspective by a helmet-mounted camera, gives an intimate perspective on how thrilling it is to be very good at riding down mountains very quickly on a bike.

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Shea Gunther is a podcaster, writer, and entrepreneur living in Portland, Maine. He hosts the popular podcast "Marijuana Today Daily" and was a founder of Renewable Choice Energy, the country's leading provider of wind credits and Green Options. He plays a lot of ultimate frisbee and loves bad jokes.

First person view of a terrifying mountain bike run during the Valparaiso Urban Downhill race
Check out how it looks to plunge headlong down one of the gnarliest mountain bike race courses in the world.