Hempstead Lake State Park is a multi-use park with opportunities for tennis, basketball, horseback riding, biking, hiking, picnicking and additional sports. The park offers 20 tennis courts and three ponds. Fishing is popular on the park's ponds. Dogs are okay on leash.
Off route 111 in Hampstead NH. Turn left after gas station/dunkin donuts across from Landscaping place.
http://www.tripleblaze.com/trail.php?c=3&i=4859