In the winter, you can only your ride fat bikes on the trails, so leave your skinny-tired mountain bike at home.  Fat Bikes have special frames to accommodate tires 3.7” up to 5" in width.  We’ve found over the past 4 winters, that tire widths over 4.5” perform the best on the trails we groom at Walden  The tire pressure you use on the groomed trails in the winter depends on the tire diameter and the rider weight. For winter riding on groomed trails, fat bikes tire pressure is very low at 1-8 psi, providing a large contact patch on the snow, good traction and preventing the tire from sinking into the snowshoe and ski trails.  Don't forget that your tire pressure drops when you take your bike from the warm house to the cold trails.

The Weather Factor
Cold weather will create a firm trail and this is key to making fat biking a low impact sport on groomed trails.  Check the WCC Ski Club website for information indicating if the trails are suitable for Fat Biking. Just because ski trails are open, does not mean the trails are open to ridable. New snow will create soft trail conditions until we can get them packed and get a cold night.  New snow is great for skiing, but not riding