Bear Brook State Park, Allenstown, N.H.
You can thank the Seacoast Chapter of the New England Mountain Bike Association (www.nemba .org) for creating and maintaining some of the best trails here. Start with the easy Ferret Trail or the double-track Bobcat. Then move on to the silky smooth Pitch Pine or the root-studded, rock-littered downhill run called Carr Ridge. Bear Hill is a challenging climb, but you’ll be rewarded for your efforts with a thrilling downhill. Afterward, take a bath in Bear Hill Pond to wash off the mud and sweat. www.nhstateparks.org/state-parks/alphabetical-order/bear-brook-state-park.