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Hiking trails & Routes
United States
New Jersey
Sussex County

Pebble Loop Trail

Easy

3.1

(8)

45

hikers

Pebble Loop Trail

01:22

4.81km

100m

Hiking

The Pebble Loop Trail offers a rewarding hike through the varied landscapes of Allamuchy Mountain State Park, New Jersey. You'll navigate a mix of singletrack and doubletrack paths, winding through wooded sections and open fields. The trail's defining feature is its rocky terrain, with numerous scattered stones and noticeable climbs that make the 3.0-mile (4.8 km) loop feel more engaging, culminating at "the pebble" – a large glacial erratic at the highest point.

Planning your visit to the Pebble Loop Trail is straightforward, with trailhead access available within Allamuchy Mountain State Park. While the trail is rated easy, its 342 feet (104 metres) of elevation gain and rocky sections provide a sustained effort over its 1 hour and 21 minutes estimated duration, making it a good choice for those looking for a bit more than a flat walk. Dogs are permitted on the trail, provided they are kept on a leash.

What truly sets this trail apart is the iconic "pebble" itself, a significant landmark that lends its name to the route. The trail's demanding rocky terrain provides a notable challenge for both hikers and mountain bikers, and its integration with other popular routes like the Waterloo/517 Trail and the Highlands Trail makes it a key component of the park's extensive system.

Last updated: June 9, 2026

Waypoints

A

Start point

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3.73 km

The Pebble

Viewpoint

B

4.81 km

End point

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Way Types & Surfaces

Way Types

4.81 km

Surfaces

3.25 km

1.53 km

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Elevation

Elevation

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Highest point (320 m)

Lowest point (240 m)

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Weather

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Today

Saturday 27 June

24°C

18°C

54 %

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Max wind speed: 7.0 km/h

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Frequently Asked Questions

How long does it typically take to hike the Pebble Loop Trail?

The Pebble Loop Trail is approximately 4.8 kilometers (3.1 miles) long. Hikers generally complete it in about 1 hour and 20 minutes, depending on pace and stops.

What is the terrain like on this trail?

The trail features a varied terrain with a mix of single and doubletrack paths. You'll encounter numerous scattered rocks and frequent 'rock gardens,' along with a rolling landscape that includes both gradual and moderately steep ascents and descents. Sections can be rocky with moss-covered stones, and it crosses two small streams.

Where is the main trailhead for the Pebble Loop Trail, and what are the parking options?

The Pebble Loop Trail is located within Allamuchy Mountain State Park. While specific parking details aren't provided, access is often via the Waterloo/517 Trail. It's advisable to check the official Allamuchy Mountain State Park website for the most current parking information and trailhead access points.

What notable features or landmarks can I expect to see?

The most distinctive feature is the 'Pebble' itself, a large and impressive glacial erratic found at approximately 1.3 miles into the loop at its summit. This geological point of interest gives the trail its name. The trail also offers a scenic forested loop and views along the ridgeline above the Musconetcong River.

Is the Pebble Loop Trail dog-friendly?

Yes, the trail is generally dog-friendly. However, it's always recommended to keep dogs on a leash and to follow all park regulations regarding pets within Allamuchy Mountain State Park.

Are there any permits or entrance fees required for Allamuchy Mountain State Park?

Generally, there are no entrance fees for Allamuchy Mountain State Park. However, it's always a good idea to check the official New Jersey State Park website (nj.gov) for any updated information on permits or fees before your visit.

When is the best time of year to hike this trail?

The trail can be enjoyed year-round. Spring offers lush greenery and blooming flora, while autumn provides vibrant fall foliage. Summer is pleasant due to the dense, shady forest. Winter hiking is possible, but be prepared for potentially icy or snowy conditions on the rocky sections.

Does the trail intersect with other paths in Allamuchy Mountain State Park?

Yes, the route overlaps with sections of the Waterloo-517 Trail and the Highlands Trail. It also briefly touches parts of the Ranger Trail and the 9-11 Trail (New Jersey thru route), providing connections to a larger network within the park.

What should I know about the difficulty of the trail?

The Pebble Loop Trail is generally rated as easy to moderate. While the overall difficulty is manageable, some sections, particularly when accessed via the Waterloo/517 Trail, begin with a sustained, strenuous, and rocky climb. The rocky terrain requires careful footing, making it a bit more challenging than a flat, smooth path.

What kind of wildlife might I encounter along the route?

The wooded habitat provides opportunities to observe a variety of wildlife. Hikers have reported seeing deer, swans, great blue herons, and beavers. Keep an eye out for various bird species and other forest creatures.

Are there any cafes or amenities nearby?

Allamuchy Mountain State Park is a natural area, so there are no cafes directly on the trail. However, nearby towns like Stanhope and Netcong offer various amenities, including cafes, pubs, and accommodation options, a short drive from the park.

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