The attractions at Miller State park include scenic hiking trails, shady picnicking and a beautiful scenic drive to the mountain's summit. The park is open from early April until mid October. There is a $2.50 entrance fee and children 11 and under are free.
Three popular trails include:
The Wapack Trail (yellow blazes), a 21-mile footpath that extends from Mt. Watatic in Ashburnham, Massachusetts to North Pack Monadnock in Greenfield, New Hampshire, traverses the summit of Pack Monadnock. From the Route 101 parking area at the base of the auto road, to the summit via the Wapack Trail is 1.4 miles. North of Pack Monadnock the Wapack Trail continues 3.8 miles through the Wapack National Wildlife Refuge, over North Pack Monadnock to Old Mountain Road.
The Raymond Trail (white blazes) begins on the west side of the mountain on East Mountain Road. The 1.6 mile trail was constructed cooperatively by Peterborough Boy Scout Troop 808 and the Peterborough Conservation Commission. It reaches the summit at the picnic area just north of the parking area.
The Marion Davis Trail (blue blazes) begins at the Route 101 parking area at the base of the auto road. It climbs 1.4 miles to the summit.