Mount Monadnock, Pumpelly Trail

OutAndBack • 9 mi • 1700 ft

The Pumpelly Trail from Dublin Lake to the top of the region’s namesake peak is really two hikes in one. The first half is a pleasant walk through woodlands brimming with reminders of the area’s agricultural history. The second is a scrambling roller-coaster ascent over a ridge that extends northeast from Mount Monadnock’s summit. It’s the ridge section, gaining and losing altitude in 10-and 20-foot increments, that earns this hike its difficult rating and adds substantially to the elevation gains predicted by topographic maps. Still, the dual personality of this hike commends it as the only single trail that samples the full geographic range of the beautiful Monadnock Region. Special attractions: A quiet walk in the woods, a bumpy scramble above timberline, and the ultimate Monadnock view.
Download Trail Guide
View Topo Map
Activity Type: Hiking
Nearby City: Nashua
Length: 9 total miles
Elevation Gain: 1,700 feet
Trail Type: Out-and-back
Skill Level: Difficult.
Local Contacts: Monadnock State Park
Local Maps: USGS Monadnock Mountain 7.5 x 15, and Marlborough 7.5 x 15
Trail Photos
Got photos of this trail?  Upload Now
View All Photos

Recent Trail Reviews


We found this to be a lovely and less-crowded route to the summit of Monadnock. While the summit was fairly crowded on a Sunday afternoon, we saw only a handful of hikers on Pumpelly. The entrance was much easier to find than the internet suggested. Heading West .4 miles from the center of Dublin town (at the flag pole), you turn left on Lake Road and go exactly .4 miles. You will see a trail on the left with a sign 5 meters from the road, which is directly across from a brown cabin on the right lakefront. The trail was easy to follow in the summer and had only one steep-ish section. We also took a swim in Dublin Lake after we came down, so bring a swimsuit or towel if you'd like to cool off.


We descended this trail from the summit. The trail is beautifully exposed, long and very interesting. Below treeline however, this trail is virtually unmarked! Be very careful to stay on the trial. In my opinion, trail keepers should do a better job keeping this trail maintained and marked.

View All Reviews