West of Manchester and east of Bennington, the Crotched Mountain Ski Area has 5 lifts serving a dozen runs with a max vertical drop of 875 feet.
Try hiking to the true summit, which is about 200 feet higher off the Summit lift. There are three unmarked but inbounds trails.
To reach the snowboarding at ski area from Concord, head north on US89 to Exit #5. Head west on US202/SR9 towards Henniker and Hillsborough. Just past Hillsborough, exit off SR9 and follow US202 west (it actually seems to be heading south) for 8.1 miles passing through Antrim. Turn left heading east on SR47 for 3.4 miles to Crotched Mountain Ski Area. The Crotched Mountain Ski Area is located at 615 Francestown Road (aka SR47) in Bennington.
Overall, Crotched Mountain Ski Area is the 15th most popular snowboard & freeride destination of all 19 snowboarding resorts in New Hampshire.