GoPro decided Kilian Jornet's insane ridge running in Norway deserved a short video and they did a hell of a job. I don't know if this is one of the videos they can show in the GoPro display at Best Buy or shoppers will wet their pants.
This isn't even the most amazing video I've seen of him. He skied some steep mountain that had never been skied before. Some other runner followed him for a few minutes as he descended a technical stretch of a rocky trail run and its just mind blowing.