The best walks and hikes around Union
4.8
(29)
551
hikers
69
hikes
Hiking around Union provides access to trails within local parks and nature preserves, including the extensive South Mountain Reservation. The terrain is characterized by wooded hills, paths along the Rahway River, and natural features like Hemlock Falls. This network of routes offers options for different fitness levels, from gentle park loops to more challenging reservation hikes.
Best hiking trails around Union
- The most popular hiking route is Lenape & Rahway Trail Loop, a 5.7 miles (9.2 km) trail that…
Last updated: May 1, 2026
6
hikers
7.79km
02:14
180m
170m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3
hikers
3.80km
01:09
140m
130m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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1
hikers
2.37km
00:36
0m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
1.62km
00:25
0m
0m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.8
(10)
85
hikers
9.20km
02:33
160m
160m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Popular around Union
Tips from the Community
Hemlock Falls is a small waterfall in the South Mountain Reservation in New Jersey. There are a few different trails that take you to the falls, but all end at the bridge next to the falls. You can usually run to Hemlock Falls year round, but the waterfall is frozen solid in the winter months.
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The view from Washington Rock shows the lush forest for miles and views of the town of Milburn in the distance.
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The view from Washington Rock shows the lush forest for miles and views of the town of Milburn in the distance.
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The entire waterway from the upper Orange Reservoir down to the southern boundary of the South Mountain Reservation is controlled through means of irrigation and damming. There is a small dam here between Campbells Pond and Diamond Mill Pond that usually creates a little cascade.
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The Rahway River in the South Mountain Reservation flows at different strengths during different times of the year. The trails in the reservation cross back and forth over the river several times, sometimes using bridges and sometimes just passing through the water. The river way is especially picturesque in the fall months.
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Hemlock Falls is a small waterfall in the South Mountain Reservation in New Jersey. There are a few different trails that take you to the falls, but all end at the bridge next to the falls. You can usually hike to Hemlock Falls year round, but the waterfall is frozen solid in the winter months.
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Frequently Asked Questions
Are there many hiking trails to choose from around Union?
Yes, there are over 50 trails in the area. You'll find a great mix of options, from easy park loops to more demanding hikes within the South Mountain Reservation, catering to all fitness levels.
What do other hikers enjoy most about the trails near Union?
The area is highly rated by the komoot community. Hikers often praise the well-maintained paths through the wooded hills of South Mountain Reservation and the scenic routes that follow the Rahway River.
Are there any hikes with waterfalls near Union?
Yes, Hemlock Falls is a popular feature in the South Mountain Reservation. You can see it on the Washington Rock – Hemlock Falls loop from Millburn, which combines the waterfall with great viewpoints.
Can I bring my dog on the trails?
Many trails in the area, particularly within South Mountain Reservation, are suitable for hiking with a dog, provided they are kept on a leash. Always check local signage at the trailhead for specific park rules.
What is a good trail for beginners or families?
For a gentle and accessible outing, the Nomahegan Park loop from Kenilworth is an excellent choice. It's a relatively flat and short walk, perfect for a relaxed afternoon.
Where can I find a hike with good views?
For rewarding views, head to Washington Rock inside the South Mountain Reservation. The Washington Rock loop from Millburn is a moderate hike that takes you directly to this scenic overlook.
Are there any circular hiking routes?
Yes, many of the best routes are loops. A great example is the Hemlock Falls via Lenape, Rahway, & River Trail loop, which offers a varied journey through the reservation without retracing your steps.
What is the terrain like on the trails around Union?
The terrain is quite varied. You can expect everything from flat, paved park paths to dirt trails through wooded, rolling hills. Many routes in South Mountain Reservation involve moderate ascents and descents.
Are there options for trail running near Union?
Definitely. The network of trails in South Mountain Reservation is very popular with trail runners. The Rahway Trail offers a relatively flat route along the river that is ideal for a steady run.
What should I know about parking at the trailheads?
Most trailheads for South Mountain Reservation and local parks have designated parking areas. However, they can fill up quickly, especially on weekends. It's always a good idea to arrive early to secure a spot.
How difficult are the hikes in this area?
The trails range from easy to difficult. While there are many gentle walks, the majority of routes in South Mountain Reservation are rated as moderate due to elevation changes. There is one difficult trail for those seeking a significant challenge.
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