Iron Dog!

I had a friend who once did practice "runs" with Iron Dog competitors and he told me that these guys average 80 mph in order to make it from Anchorage to Nome on their snowmobiles in about four days. That's really flying! Especially when you're skimming over snow and tundra in possible whiteout conditions. These guys are nuts! Here's a website to learn more about the race and see GPS tracking of where a bunch of the guys are currently on the trail: Iron Dog Snowmobile Race