Mount Monadnock is open to
hiking,
backpacking,
picnicking, and
snowshoeing.
Backcountry skiing is possible on some of the lower trails. A seasonal
campground east of the mountain is maintained by the state of New Hampshire, but camping is not allowed anywhere else on the mountain. A per-vehicle fee is charged to park at the Old Toll Road and State Park Headquarters trailheads. There are no roads to the summit, and the Old Toll Road, which leads to the Halfway House site, is closed to vehicles.
ATVs are not allowed on the mountain. Good views of the mountain can be had from a number of regional roads and highways, especially from
New Hampshire Route 124.
Trails Mount Monadnock is criss-crossed by many miles of well-maintained hiking trails. The most popular trails are the White Dot Trail, , the shortest but steepest ascent to summit, accessible from the Monadnock State Park headquarters and campground on the southeast side of the mountain; and the White Arrow Trail, to summit, considered the easiest ascent, via the Old Toll Road (Halfway House) trailhead on the south side of the mountain. Other major trails include: • The Marlboro Trail, on the west side of the mountain, to summit • The Dublin Path, also part of the
Monadnock-Sunapee Greenway, on the north side, to summit • The Pumpelly Trail, on the northeast side, the longest ascent, to summit. This trail boasts panoramic views for longer than the other trails, as it hugs the ridge. • The Birchtoft Trail (Gilson Pond trailhead) and several connecting trails, providing access to the summit from the east side of the mountain • The Cascade Link, on the east side of Monadnock, connects the White Dot Trail to Pumpelly Trail while providing easterly views from its exposed ridge. Spellman Trail and Red Dot Trail may also be accessed from Cascade Link. Other important trails include the White Cross Trail, an alternative parallel to the White Dot Trail, and the Cliff Walk, a scenic detour that shadows a ledge to the east of the White Arrow Trail. The trail ascends the mountain from the southwest; however, there is no trailhead where that trail crosses
Route 124 at the foot of the mountain, and the highway there is marked with "no parking" signs. The closest trailhead southbound on the M&M Trail is on Bullard Road, which leads south from Route 124 half a mile west of the M&M Trail's crossing of the state highway. The mountain is also the southern terminus of the
Monadnock-Sunapee Greenway, a highland trail connecting Mount Monadnock and
Mount Sunapee.
Hiking the mountain The trip to the summit and back via one of the shorter trails, which usually takes less than six hours, is considered moderately challenging for the average hiker but requires no technical skills during the late spring to early fall season. Throughout the year wind and weather on the exposed, rocky summit cause harsher conditions than below the tree line. Winter storms and summer thunderstorms can be life-threatening. Winter snow and ice can remain on the trails well into May, making hiking hazardous or impossible without special equipment. The compacting of snow due to winter recreation on the more frequently used trails tends to lengthen the time it takes for the snow and ice to melt off. Stabilizers,
crampons,
ice axes,
ski poles, and
snowshoes may be helpful or necessary for winter and early spring ascents, depending on ice and snow cover. Fall hiking generally requires warmer clothing, an awareness of weather conditions, and earlier ascent times. As there are no reliable water sources on the mountain and little shelter from the sun above ,
dehydration and
heat stroke are potential hazards. The mountain and surrounding area are
black bear habitat, although problem encounters with bears are rare. Advice on hiking can be solicited from Memorial Day through Columbus Day and select off-season weekends at the park headquarters on the southeast side of the mountain. Trail descriptions and maps of Mount Monadnock are published by a variety of sources. The Society for the Protection of New Hampshire Forests prints a guidebook with maps, trail descriptions, history, geology, ecology, and other trivia on the mountain. ==Conservation==