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Hiking in Bear Brook State Park: trails, map and practical info

Merrimack Valley • New Hampshire

4.5 Appreciated by 11 hikers
François Dumaine
By François DumaineContributor since 2013Updated 20/06/2026
Difficulty
Moderate
Distance
19 km
Elevation
150 ft
Duration
5h

Explore 10,000 acres of New Hampshire's largest developed park near Allenstown with a moderate 19 km hike gaining 150 m elevation in around 5 hours. The park's 40-mile trail network lets you customize your route through forests, beaver ponds, and rolling hills—perfect for returning multiple times without repeating the same path.

Recommended for :
Intermediate hikers

Ready to explore Bear Brook State Park? Here's everything you need to know before you go!

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Trail description

Description

Bear Brook State Park covers 10,000 acres in New Hampshire's Merrimack Valley, making it the largest developed state park in New Hampshire. That size matters: with over 40 miles of trails threading through the property, you can visit a dozen times and still find corners you haven't explored. Yet the park sits close enough to Manchester and Concord that it works just as well for a weekday evening walk as it does for a full weekend camping trip.

The terrain here is classic New Hampshire piedmont — rolling hills blanketed in second-growth forest, broken up by beaver ponds, seasonal streams, and wetland edges. You'll move through stands of white pine and hemlock, mixed hardwood forest that turns vivid in October, and open pond shores where the tree line reflects cleanly off still water. It doesn't have the dramatic elevation of the White Mountains, but it has a quiet, lived-in wildness that's easy to underestimate until you're an hour deep into the trail network and haven't seen another person.

The Trails

The trail network is the park's main draw, and its design rewards exploration. Well-marked intersections let you build loops of almost any length, from a quick one-hour circuit to a full-day outing covering 19 kilometers. On longer routes, you'll gain around 150 meters of elevation — enough to give your legs something to work against without turning the day into a slog. That profile puts the park squarely in moderate territory, accessible to hikers building endurance while still delivering satisfying climbs.

The Bear Hill Pond Trail is a reliable starting point and one of the park's most rewarding moderate loops. The route follows the shoreline of a clean, quiet pond, alternating between soft forest floor and occasional rocky sections. The elevation changes are gentle but present, and the pond itself offers multiple spots to stop, sit, and watch the water. Early morning is particularly good here — deer come to drink along the edges, and the bird activity around the wetland margins is worth slowing down for.

For hikers who want more of a physical challenge, the Catamount Trail delivers a noticeably different experience. The climb is steady and sustained, moving through increasingly dense forest before breaking out to views across the park's forested landscape and toward distant peaks. The upper sections involve some scrambling over granite outcrops and root-crossed stretches that demand attention, especially after rain. It's not technical, but it keeps you engaged in a way the flatter trails don't.

The interconnected trail system means you're rarely locked into a single route. Most hikers piece together their own loops using the named trails as anchors, adding or subtracting distance based on how the day is going. If you're new to the park, starting with the Bear Hill Pond Trail gives you a solid read on the trail marking system and the park's general geography before you start improvising.

Wildlife and Landscape

Bear Brook's mix of forest types and water features creates genuinely good conditions for wildlife watching. The beaver ponds scattered through the property attract waterfowl and wading birds, and the forest edges between different habitat types are productive for songbirds. White-tailed deer are common throughout the park, and the early morning and late afternoon hours consistently produce the best sightings. The wetland sections in particular reward patience — slow down, stay quiet, and you'll see more than you expect.

Beyond Hiking

The trail network does more than one job. Designated sections are open to mountain bikers, and the park's rolling terrain translates well to cycling — flowing singletrack through the trees, manageable climbs, and enough variety to keep things interesting without demanding expert-level technical skills.

The ponds scattered across the property offer fishing access, with some sitting right alongside main trails and others requiring a short push through the brush to reach. The settings are peaceful enough that a slow day on the water doesn't feel like a wasted one.

Winter changes the park's character without closing it down. The hiking trails become snowshoe routes, and the park maintains groomed tracks for cross-country skiing. The same forest corridors that provide shade in summer create sheltered travel lanes in winter, and the frozen ponds open up additional route options for experienced winter travelers.

Camping and Facilities

The park's campgrounds make multi-day visits straightforward. The sites are positioned to offer reasonable privacy while staying accessible, and using them as a base camp lets you work through different sections of the trail network across several days without the drive back and forth. Getting on the trail at first light — when the forest is quiet and wildlife is moving — is one of the better arguments for staying overnight.

The Bear Brook Museum Complex adds context to what you're seeing on the trails. The park's landscape is largely second-growth forest reclaiming land that was once farmed, and understanding that history changes how you read the terrain — the stone walls running through the woods, the old field edges, the way the forest composition shifts from one area to the next.

Planning Your Visit

The park's size is an asset, but it means the trail map is worth studying before you head out. Multiple trailheads and a dense network of intersecting paths can be disorienting on a first visit, and knowing roughly where you want to go saves time at the trailheads. The park's location in the Merrimack Valley keeps it accessible from the region's population centers, which means weekends can bring visitors — but the trail network is large enough that it absorbs them without feeling crowded.

Conditions vary across the park depending on terrain: ridgetop trails drain quickly and stay firm, while pond-edge paths can hold mud well after a rain. Sturdy footwear handles the mixed surfaces well, and carrying layers is standard practice in New Hampshire regardless of the season.

Recommended gear for this trail

LGPO Pick
Elixir Tour Mid WP
Salomon
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Waterproof mid-height boot ideal for rocky terrain
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Trail Ergo Cork
Black Diamond
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4.4 (1456 reviews)
Comfortable cork grip for long ascents
69.99 $
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Daylite Plus 20L
Osprey
Daylite Plus 20L
4.7 (3215 reviews)
Lightweight and versatile for day hikes
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Actik Core 625
Petzl
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Wide Mouth 1L
Nalgene
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Ready to go?

Everything you need to know before you go

Where?

Address
157 Deerfield Rd, Allenstown, NH 03275, USA
GPS coordinates
43.119281, -71.37047
Phone
(603) 485-9874

Starting Point

The bear brook state park is located in Allenstown, New Hampshire. To get to the start of the trails, take exit 5 off of I-93 and head west on Route 28. The park will be on your left.

When?

Opening hours
Monday: Open 24 hoursTuesday: Open 24 hoursWednesday: Open 24 hoursThursday: Open 24 hoursFriday: Open 24 hoursSaturday: Open 24 hoursSunday: Open 24 hours
Varies by season
Best season
Fall
Spectacular colors
Best time
Early morning
Less crowded
Weather (next days)
Loading

How much?

Entry fees
Adult
Not available
Child
What to bring?
Gear
Download the PDF checklist
Water & food
2L minimum
No water point on the trail
Bring energy snacks for a 4h+ hike
Good to know
Park rules
No dogs
Safety
Download the GPX before you go
Limited cellular coverage on the trail
Slippery after rain
Be careful on rocky sections
In an emergency
Emergency
911
Parking GPS
43.119281, -71.37047
Center
(603) 485-9874

Hikers' opinions

4.5
8 Reviews
M
Michael
Nov 14, 2025
Bear Brook State Park offers a well-maintained hiking experience through beautiful forest terrain. The 19 km trail provides a solid workout with 150 meters of elevation gain that keeps things interesting without being overly challenging. The moderate difficulty makes it accessible for intermediate hikers looking for a peaceful nature escape in the Merrimack Valley.
S
Sarah
Aug 9, 2025
This state park delivers decent hiking with a good variety of forest scenery along its 19 km route. While the 150 meters of elevation gain provides some engaging climbs, the trail lacks dramatic viewpoints or standout features. The hike is accessible from nearby towns and offers a solid outdoor workout, though it may not be memorable for those seeking spectacular vistas.
S
Sarah
Aug 9, 2025
This 19-kilometer trail in the Merrimack Valley delivers a decent workout with moderate difficulty and 150 meters of elevation change. The forest paths are pleasant enough, though the scenery lacks dramatic viewpoints or memorable highlights. Budget around five hours for the full loop, and be prepared for parking and entrance fees that add to your costs.
D
David
Jun 27, 2025
Excellent outdoor destination with well-groomed trails spanning 19 km through diverse forest landscapes. The moderate 150 meter elevation gain provides enough challenge to feel rewarding without being exhausting. The park's accessibility and peaceful atmosphere make it a great choice for intermediate hikers seeking a quality nature experience in New Hampshire.
J
Jennifer
Mar 18, 2025
Bear Brook State Park presents a respectable hiking option with its 19 km trail network and 150 meters of elevation change. The forest setting is pleasant and the difficulty level suits intermediate adventurers well. However, be aware that both parking and park access require fees, which may catch some visitors off guard when planning their visit.

FAQ - Frequently asked questions

Everything you need to know
Moderate
150.00
Monday: Open 24 hoursTuesday: Open 24 hoursWednesday: Open 24 hoursThursday: Open 24 hoursFriday: Open 24 hoursSaturday: Open 24 hoursSunday: Open 24 hours
5h
No
No
Bear Brook State Park is rated as a moderate difficulty hike with 19 km distance and 150 m elevation gain. It is suitable for hikers with some experience, though beginners in good physical condition may also complete it with proper preparation.
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Update : June 2026