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Hiking around Green Knoll, located in Somerset County, New Jersey, offers access to a network of easy hiking trails primarily within Washington Valley Park. The area is characterized by diverse forests, scenic reservoir views, and lush greenery that transforms into vibrant fall foliage. Trails often feature gentle gradients around the Washington Valley Reservoir and through wooded areas.
Last updated: May 18, 2026
796m
00:13
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Easy 0.5-mile loop in Chimney Rock Park, offering views of the iconic Chimney Rock and surrounding hardwood forests.
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7.01km
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Hike the easy 4.4-mile Duke Island Park and Canal Trail Loop, enjoying river and canal views with minimal elevation gain.

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12
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
8
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2.81km
00:46
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
9
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Duke Island Park is a beautiful, manicured park. The park is surrounded by Raritan Power Canal and the Raritan River, so it truly is an island. There are several footpaths that run through the park, restrooms, a pavilion, and a playground.
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The Canal Trail is the main trail that runs through Duke Island Park. It is a well-maintained trail that runs the length of the island and, as the name suggests, follows along the canal. It is a popular trail and gives you great views of the water.
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The Headgates Dam is a 230-foot-wide on the Raritan River. The dam was constructed in 1842 and was used to produce power for the mills that were located downstream.
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Washington Valley Park West, integral to the larger park, boasts trails with stunning views of the Washington Valley Reservoir. Experience lush greenery in spring, vibrant foliage in fall, and the reservoir's beauty.
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With rocky, mountainous terrain adorned by pine and hemlock, the park's eastern section hosts the smaller East Branch Reservoir and Buttermilk Falls. Offering varied difficulty levels, it provides picturesque views of the Eastern Branch Reservoir.
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Washington Valley Park West, an integral part of Washington Valley Park, beckons with trails offering stunning views of the Washington Valley Reservoir. Bask in lush greenery during spring and summer, and revel in vibrant foliage come fall.
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There are over 30 easy hiking trails around Green Knoll, primarily located within Washington Valley Park. These routes offer diverse experiences, from short loops to longer walks with scenic reservoir views.
Easy hikes around Green Knoll feature diverse forests, offering lush greenery in spring and summer, and vibrant foliage in the fall. Many trails provide scenic views of the Washington Valley Reservoir and the Eastern Branch Reservoir, with gentle gradients through wooded areas.
Yes, the area is well-suited for families. The Chimney Rock Loop is a very short, easy option at just 0.5 miles, perfect for a quick outing with children. Other easy trails within Washington Valley Park are also generally suitable for families.
Many trails in the parks surrounding Green Knoll, such as Washington Valley Park, are dog-friendly. However, it's always recommended to keep dogs on a leash and to check specific park regulations before your visit to ensure a pleasant experience for everyone.
Yes, several easy circular routes are available. For example, the Eastern Branch Reservoir β Washington Valley Park East loop from Martinsville is an easy 1.6-mile circular path. Another popular option is the Washington Valley Park West loop from Martinsville, which is 1.7 miles long and offers reservoir vistas.
Beyond the trails, you can explore nearby attractions such as Washington Valley Park West itself, which offers beautiful forest scenery. Duke Island Park, a manicured park surrounded by the Raritan Power Canal and Raritan River, is also nearby. You can also visit the historic Headgates Dam on the Raritan River.
The easy trails around Green Knoll are highly rated by the komoot community, with an average score of 4.6 stars. Hikers often praise the well-maintained paths, the peaceful forest environments, and the scenic views of the reservoirs, making them ideal for relaxed walks.
Yes, parks like Washington Valley Park, which hosts many of the easy trails, typically offer designated parking areas. It's advisable to check specific park entrances for the most convenient parking for your chosen trailhead.
The Green Knoll area is beautiful year-round. Spring brings lush greenery, while summer offers warm weather for shaded walks. Fall is particularly popular for its vibrant foliage. Even in winter, the trails can be enjoyed, though conditions may vary.
While popular, Washington Valley Park offers numerous trails, allowing for quieter experiences, especially on weekdays or by exploring some of the less-trafficked loops. The Eastern Branch Reservoir β Washington Valley Park East loop from Washington Valley Park East is a good option for a peaceful walk.
The duration of easy hikes varies. Shorter loops like the Chimney Rock Loop can be completed in under 15 minutes. Longer easy trails, such as the Washington Valley Park β Washington Valley Park West loop from Martinsville (2.8 miles), might take around 1 hour and 15 minutes, depending on your pace.


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