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New Jersey

Union County

The best MTB trails in Union County

4.0

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Mountain bike trails in Union County, New Jersey, traverse a landscape characterized by extensive park systems, including the Watchung Reservation and Washington Valley Park. The region features wooded areas with deciduous forests, offering natural obstacles and varied terrain. Riders can expect elevation changes, stream crossings, and a mix of surfaces like dirt and rocky sections.

Best mountain bike trails in Union County

  • The most popular mountain bike trail is Washington Valley Park West loop from Bridgewater Township, a 12.7…

Last updated: April 30, 2026

4.0

(1)

41

riders

#1.

Washington Valley Park – Washington Valley Park West loop from Martinsville

20.6km

01:57

360m

360m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy
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Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Popular around Union County

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Tips from the Community

Lisa
January 3, 2025, Jolie Cafe

This little coffee shop closes fairly early — usually around 4pm on weekdays, and 2:30pm on weekends. They have a nice selection of drinks, including a juice bar and a latte that features blue spirulina.

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This scenic crushed gravel path takes you through the heart of Staten Island along the north side of La Tourette Park's many spots fields and hiking trail network. Here you get great views of the woods and marsh.

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Alex
September 23, 2024, Osborn Pond

Osborne Pond, also known as Osborn Mill Pond, is a 20-acre lake home to fish species like black crappie and largemouth bass. The Lees Hill Road bridge that goes over Osborn Pond provides a nice view of this waterway, dotted with greenery on the waters surface. Stop on the sidewalk here for a photo opportunity.

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The Great Swamp National Wildlife Refuge in Morris County, New Jersey, is a vital habitat for over 244 bird species and other animals. Established in 1960, it became the first wilderness area within the U.S. Fish and Wildlife Service in 1968. Spanning nearly 7,800 acres, it provides a mix of habitats within the Northeastern coastal forests ecoregion, serving as a crucial stopover for migratory birds along the eastern U.S. The refuge also supports diverse wildlife, including deer, foxes, turtles, and occasional sightings of bears and beavers. The Great Swamp also plays a critical role in flood control and water purification, acting as a natural filter that traps sediments and contaminants while draining the surrounding region and gradually releasing floodwaters during extreme weather.

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6 mile is well worth the drive, just not after a huge rain fall cuz it gets muddy as hell.

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Some of the most flowy trails with great incline/decline challenges. Features are a constant. Not a one and done.✅

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Six Mile Run Reservoir Site is a large green space on the outskirts of New Brunswick. Despite the name, there is no reservoir in the preserve. There are, however, many great trails that run through woodland and past streams.

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GRijo
June 11, 2024, Osborn Pond

Great Swamp is a very nice flat (i.e., no climbs) ride through Basking Ridge, Harding, and Long Hill Township.

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Frequently Asked Questions

How many mountain bike trails are available in Union County?

Union County offers over 10 mountain bike trails, catering to various skill levels. These routes traverse wooded parklands and varied singletrack, providing diverse riding experiences.

What are the typical difficulty levels for mountain biking in Union County?

You'll find a good mix of trails in Union County. There are 7 easy routes, perfect for beginners or a relaxed ride, and 4 moderate routes for those seeking a bit more challenge. Currently, there are no difficult trails listed in the area. An example of an easy route is the Mountainbike loop from Martinsville.

Are there any family-friendly mountain bike trails in Union County?

Yes, Union County has several family-friendly options, primarily among its 7 easy-rated trails. These routes often feature accessible loops through wooded areas, suitable for riders of different ages and skill levels. The Wolfe's Park – Wolfe's Pond Trail loop from Annadale is a good example of an easy route.

What kind of terrain can I expect on mountain bike trails in Union County?

Mountain bike trails in Union County are characterized by wooded parklands, varied singletrack, and accessible loops. You can expect a mix of surfaces like dirt and rocky sections, along with natural obstacles, elevation changes, and stream crossings, particularly within extensive park systems like Washington Valley Park.

Are there any circular mountain bike routes in Union County?

Yes, many of the mountain bike trails in Union County are designed as loops, allowing you to start and end at the same point. For instance, the popular Washington Valley Park West loop from Bridgewater Township and the La Tourette Park Greenway – La Tourette Park Gravel Path loop from Grasmere are both circular routes.

What are some notable natural features or landmarks I might see while mountain biking in Union County?

While mountain biking in Union County, you'll often ride through scenic wooded areas. Notable natural features and landmarks in the region include Watchung Reservation, a significant natural feature, and various lakes such as Lower Echo Lake and Lake Surprise Bathhouse. You might also encounter facilities like Warinanco Park.

What do other mountain bikers enjoy most about the trails in Union County?

The mountain bike trails in Union County are highly rated by the komoot community, with an average score of 4.0 stars. Riders often praise the varied terrain, the accessible loops, and the experience of riding through the region's wooded parklands.

What is the typical length and duration of mountain bike trails in Union County?

Trail lengths vary, with routes ranging from approximately 8.4 km (5.2 miles) to 29.1 km (18.1 miles). Durations can range from just over an hour to nearly three hours, depending on the trail and your pace. For example, the Osborn Pond loop from Lyons is about 26.9 km (16.7 miles) and takes around 1 hour 31 minutes.

Are there any specific parks or areas known for mountain biking in Union County?

Yes, Washington Valley Park is a prominent area for mountain biking, offering various loops. La Tourette Park is another popular spot, known for its greenways and gravel paths. These parks provide diverse trails within Union County's extensive park system.

Is public transport available to reach mountain bike trailheads in Union County?

While specific public transport options to individual trailheads can vary, Union County has a robust public transportation network. For detailed information on reaching specific parks or trail access points, it's best to consult local transit schedules or resources like visitunioncounty.org for general outdoor activity information.

What is the best time of year to go mountain biking in Union County?

The wooded areas and varied terrain of Union County make spring and fall particularly enjoyable for mountain biking, offering pleasant temperatures and beautiful scenery. Summer can also be good, though it might be warmer. Winter riding is possible, but trail conditions can be affected by snow and ice.

Are there any mountain bike trails that offer views or scenic overlooks?

Many trails in Union County traverse wooded areas, providing scenic views of the deciduous landscape, especially during fall foliage. While specific overlooks aren't always highlighted, the natural beauty of parks like Watchung Reservation offers picturesque settings throughout your ride.

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