When people think about Hong Kong, the first image that generally comes to mind is a giant city with more than 7 million inhabitants. But, it turns out that city also happens to be surrounded by some amazing trails that often offer simultaneously views of that modern metropolis, and in impressive amount of wilderness located just outside. Each year, those trails play host to the Vibram Hong Kong 100, an ultra-distance trail running race. The video below is a short documentary about that race, and some of the things that make it so special. Get comfortable for this 34+ minute film, it is worth the watch.