Hey all,
I made this video of a luge track in the Wasatch where you use standard forward facing sleds (tubes and saucers have been used, but not effectively). My friend Karl is a runner and basically has the winter off so he shovels his ass off to create and maintain this. He figures distance = "25 days up there, average about 15 laps=3000' per day for 25 days, about 70,000 feet (not elevation)". Enjoy.
http://vimeo.com/39327472
