Find some great cross country skiing at MA state parks.  This website lists DCR parks with cross country skiing and detailed information on each park, some even with trail maps.

For more family skiing tips, check out Liftopia's lift ticket discounts, the Ski & Ride Privilege Pass from the American Lung Assn, cross country skiing for kids at the Weston Ski Track, fun at Blue Hills Ski Area, and more info on Bradford Ski Area.