These short videos give you a quick overview of each of the Photorun routes.  They show you an animated map of the route,  some of the sights you can see along the way, and what the route would look like if you were doing it at high speed on empty streets. Each of these has a supporting detailed blog, which will provide you with all the information you need to do the Photorun, including a high-speed video of the route, interactive maps, sights, 360 views, and links to other blogs in the area.