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Running trails & routes
United States
New Jersey
Mercer County

NJ State Long Trail

Moderate

2.9

(11)

67

runners

NJ State Long Trail

00:58

9.31km

40m

Running

The NJ State Long Trail in Mercer County Park offers a moderate 5.8-mile jogging route with 119 feet of elevation gain.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

1

2.82 km

Mercer County Park

Highlight • Rest Area

Mercer County Park offers a variety of outdoor recreation experiences. From picnic areas to volleyball courts to trails, this park encompasses over 2,500 acres and is free to the public. Many of the trails interconnect and can be confusing so having a map or GPS can come in handy for navigation purposes.

Tip by

2

3.46 km

Mercer Lake

Highlight • Lake

Mercer Lake, also called Lake Mercer, is a man-made lake 365 acres in size in Mercer County Park. Keep an eye out for rowers, as this lake is home to one of a few of the US Olympic Rowing Team's training centers. Though this lake appears quite clear, it has historically faced pollution issues from runoff and nearby golf course waste.

Tip by

B

9.31 km

End point

Parking

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Way Types & Surfaces

Way Types

5.46 km

3.54 km

314 m

Surfaces

5.13 km

4.18 km

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Elevation

Elevation

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Wednesday 6 May

21°C

15°C

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Frequently Asked Questions

What is the overall nature and length of the NJ State Long Trail?

The NJ State Long Trail is an ambitious project spanning 383 miles from High Point in northern New Jersey to Cape May Point in the south. It's designed to showcase the state's diverse natural beauty, connecting various ecological and historical sites. While the full trail is still under development, with approximately 293 miles currently accessible, it offers a wide range of experiences.

What is the terrain like for jogging on the NJ State Long Trail?

The terrain varies significantly along the trail's extensive length. You can expect to encounter rolling hills, upland forests, pinelands, and areas adjacent to waterways, farms, and historic communities. Some sections are old sand roads, while others can be very wet with puddles, especially in cedar swamps. The trail incorporates existing paths, dirt roads, former railroad corridors, and canals, offering a diverse jogging experience.

How difficult is jogging on the NJ State Long Trail?

The difficulty for jogging on the NJ State Long Trail is not uniform. Some sections are rated as 'Easy' and are suitable for trail running, like the Frenchtown section in Hunterdon County. Other parts can be 'difficult and rocky climbs,' such as those found in the Musconetcong Gorge. Portions that follow the Appalachian Trail are generally easy to moderate, though steep climbs can occur. It's best to research specific segments before you go.

Are dogs allowed on the NJ State Long Trail?

Yes, many sections of the NJ State Long Trail are dog-friendly. However, leash rules and specific regulations can vary depending on the local park or land management agency that oversees a particular segment. Always check local signage or park websites for the most current rules regarding pets before bringing your dog.

What is the best time of year to jog the NJ State Long Trail?

The best time to jog the NJ State Long Trail depends on the specific section and your preferences. Spring and fall generally offer pleasant temperatures and beautiful scenery, with wildflowers in spring and vibrant foliage in autumn. Summer can be hot and humid, especially in open areas, while winter can bring snow and ice, making some sections challenging. Always check weather conditions and trail advisories before heading out.

Do I need a permit or is there an entrance fee for the NJ State Long Trail?

Generally, there is no single permit required for the entire NJ State Long Trail, as it traverses various public and private lands. However, specific sections, especially those within state parks or natural areas like Mercer County Park, might have their own entrance fees, parking fees, or specific regulations. It's advisable to check the official website of the relevant park or land manager for the section you plan to visit, such as nj.gov for state-managed areas.

What can I see along the route of the NJ State Long Trail?

Joggers on the NJ State Long Trail can expect a representative cross-section of New Jersey's natural environment. You'll find diverse ecosystems, including rich upland forests, serene waterways like Mercer Lake, and expansive pinelands with cranberry bogs. Certain portions, such as the Highlands Trail section, offer scenic spots like Sparta Mountain and Mahlon Dickerson Reservation. The trail also functions as a greenway for wildlife, offering potential sightings for observant runners.

Where can I find parking and trailhead access for the NJ State Long Trail?

Parking and trailhead access points are distributed along the extensive length of the NJ State Long Trail. For the segment located in Mercer County Park, designated parking areas are available within the park. For other sections, access points can vary widely, often found near road crossings or within state parks and forests. Given that the trail is still under development, it's highly recommended to consult updated maps and local advisories for specific trailhead locations and parking information before your visit.

Does the NJ State Long Trail intersect other well-known paths?

Yes, the NJ State Long Trail cleverly integrates and utilizes established paths. Along its route, you will find sections that overlap with other trails such as the Eastern Red, Jamie's Run, Orange, Bruin, Brady's Way, Dipping Toes, Terrapin, South Post, Barry, Red, Cottonwood, Flash Flood, Oxcart, Tar Heels, Paxson's Loop, and Blue trails. It also incorporates parts of the Appalachian Trail and the Batona Trail, as well as canal paths and former railroad beds.

What makes the NJ State Long Trail a notable trail?

The NJ State Long Trail is notable for its monumental ambition to create a continuous 383-mile route across the entire state, showcasing New Jersey's vast natural diversity from mountains to coastal plains. It serves as a vital greenway for wildlife movement and is a testament to significant community and volunteer efforts in its development. Its integration of existing paths and diverse landscapes offers a unique experience for outdoor enthusiasts.

Are there any specific considerations for joggers on this trail?

Joggers should be aware that the NJ State Long Trail is still a work in progress. While much of it is accessible, some sections may temporarily require road walking, with plans to move these off-road in the future. Given its evolving nature and varied terrain, consulting updated maps and checking for advisories is crucial for navigation. Be prepared for natural obstacles like roots and rocks, and note that some segments, particularly in areas like Belleplain State Forest, can be remote and infrequently visited.

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Moderate

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NJ State Long Trail

00:58h

9.31km

40m

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