I've been watching Storror, the English parkour group while running on the treadmill recently. Came across this older more running focused one that they produced as an ad. It makes me impressed with feelings along the lines of watching a mountain bike or ski video. Dang, some of these guys have some speed. At 0:36, Benj just flies up those rocks, looking 2x-3x faster than I'd run it. Drew (the guy who does the amazing 360 flying roll over the stream) looks super fast running through the forest.