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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 26/05/2026
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. Over 40 miles of interconnected trails let 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 sprawls across 10,000 acres of New Hampshire's Merrimack Valley, making it the state's largest developed park and a standout destination for hikers seeking variety without the crowds of the White Mountains. The park's extensive trail network weaves through a landscape that feels surprisingly wild despite its accessibility, with dense mixed forests giving way to peaceful pond shores and occasional glimpses of rolling hills.

What sets Bear Brook apart is its sheer scope—over 40 miles of hiking trails means you can return multiple times and still discover new corners of the park. The terrain here is classic New Hampshire piedmont: gentle rolling hills covered in second-growth forest, punctuated by beaver ponds and seasonal streams. You'll hike through stands of white pine and hemlock, mixed hardwood forests that explode with color in fall, and wetland edges where wildlife sightings are common.

Trail Highlights

The Bear Hill Pond Trail stands out as one of the park's most rewarding moderate loops. This trail takes you around the shoreline of a pristine pond, offering multiple spots to pause and take in reflections of the surrounding woodlands. The path alternates between soft forest floor and occasional rocky sections, with enough elevation change to keep things interesting without being strenuous. Early morning hikers often spot deer coming to drink, and the pond's edges provide excellent bird watching opportunities.

For hikers wanting more of a workout, the Catamount Trail delivers a genuinely rugged experience. This trail climbs steadily through increasingly dense forest before opening up to rewarding vistas from its peak. The ascent involves some scrambling over granite outcrops and navigating root-crossed sections that can be slippery when wet. The payoff comes at the summit, where you'll get expansive views across the park's forested landscape and glimpses of distant peaks.

The trail system's design allows for easy customization of your hiking experience. Well-marked intersections let you create loops of varying lengths, from quick hour-long walks to full-day adventures covering 19 kilometers or more. The park's relatively modest elevation changes—typically gaining around 150 meters on longer routes—make it accessible to hikers building endurance while still providing satisfying climbs.

Beyond Hiking

Bear Brook's trail network serves double duty, with designated sections open to mountain bikers. The park's terrain translates well to cycling, offering flowing singletrack through the forests and around pond edges. The same gentle topography that makes for pleasant hiking creates engaging but not overly technical mountain biking.

Fishing enthusiasts will find multiple ponds scattered throughout the park, each with its own character. Some are easily accessible from main trails, while others require short bushwhacks to reach secluded spots. The ponds support typical New Hampshire warmwater species, and the peaceful settings make for relaxing fishing even when the bite is slow.

Winter transforms Bear Brook into an entirely different outdoor playground. The hiking trails become snowshoe routes, and the park maintains groomed tracks for cross-country skiing. The same forest paths that provide summer shade create protected corridors for winter sports, and the frozen ponds offer additional route options for experienced winter travelers.

Facilities and Camping

The park's well-maintained campgrounds make it easy to extend your visit beyond a day hike. The camping areas are thoughtfully positioned to provide privacy while remaining accessible, and they serve as excellent base camps for exploring different sections of the trail network over multiple days. Waking up in the park gives you the advantage of hitting the trails early, when wildlife is most active and the forests are at their most peaceful.

The Bear Brook Museum Complex adds an educational dimension to your visit, providing context about the area's natural and cultural history. Understanding the land's past—from its agricultural origins to its return to forest—enhances your appreciation of what you're seeing on the trails.

Planning Your Visit

Bear Brook's size means you'll want to study the trail map before heading out, especially if you're planning a longer hike. The park's layout can be initially confusing, with multiple trailheads and interconnecting paths. Starting with one of the named trails like Bear Hill Pond gives you a good orientation to the park's geography and trail marking system.

The park's location in the Merrimack Valley puts it within easy reach of both Manchester and Concord, making it a convenient escape that feels much more remote than it actually is. This accessibility, combined with the extensive trail network, means Bear Brook can absorb a fair number of visitors without feeling crowded—there's almost always a quiet trail or secluded pond shore to discover.

The diverse landscape means conditions can vary significantly within the park, from well-drained ridgetop trails to potentially muddy pond-edge paths. Standard New Hampshire hiking preparation applies: layers for changing conditions, sturdy footwear for mixed terrain, and extra time to account for the temptation to explore side trails and linger at scenic spots.

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)
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How much?

Entry fees
Adult
Not available
Child
What to bring?
Gear
  • Hiking shoes Essential
  • Layered clothing Essential
  • Rain jacket Essential
  • Trekking poles
  • Headlamp
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