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Routes
Hiking trails & Routes
United States
New Jersey
Passaic County
Bloomingdale

Torne Mountain and Osio Rock Loop

Easy

3.0

(17)

30

hikers

Torne Mountain and Osio Rock Loop

01:18

4.07km

170m

Hiking

Hike the Torne Mountain and Osio Rock Loop for rugged terrain, extensive views, and panoramic vistas from Osio Rock in Norvin Green State Fo

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

2.09 km

Osio Rock Viewpoint

Highlight • Viewpoint

Osio Rock is one of the southernmost hills in Norvin Green State Forest, and the hike is often combined with Torne Mountain. From this viewpoint, you get a great overview over the New Jersey Highlands.

Tip by

2

3.26 km

Torne Mountain Viewpoint

Highlight • Viewpoint

Located in the very south of Norvin Green State Forest, Torne Mountain offers great views. From its rocky top you can see the different peaks of the State Forest and …

Tip by

B

4.07 km

End point

Parking

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Way Types & Surfaces

Way Types

4.04 km

< 100 m

Surfaces

4.04 km

< 100 m

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Elevation

Elevation

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Highest point (330 m)

Lowest point (220 m)

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Weather

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Today

Thursday 28 May

23°C

14°C

21 %

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Max wind speed: 23.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the terrain like on the Torne Mountain and Osio Rock Loop?

This loop is known for its rugged and challenging terrain. Expect steep sections, abundant rocks, exposed roots, and rock slabs. Hikers should be prepared for some scrambling, which may require using both hands and feet. It's not recommended to hike when the ground is wet.

How long does it typically take to hike this loop?

The Torne Mountain and Osio Rock Loop is approximately 4.1 km (2.6 miles) long and generally takes around 1 hour and 18 minutes to complete. This duration can vary based on your pace and how long you spend enjoying the viewpoints.

What are the main viewpoints and scenic features along the trail?

The trail offers excellent views of Northern New Jersey. Key highlights include the Osio Rock Viewpoint, which provides panoramic vistas that can sometimes include the New York City skyline on clear days, and the Torne Mountain Viewpoint. You can also see the Wanaque Reservoir, Bloomingdale, and Riverdale from various points.

Where can I park for the Torne Mountain and Osio Rock Loop, and is it usually crowded?

Parking for the trailhead is typically found on Glenwild Avenue. It can be quite limited, especially on weekends. To secure a spot, it's highly advisable to arrive early in the morning.

What is the best time of year to hike this loop?

The trail is best enjoyed during drier seasons. Spring and fall offer pleasant temperatures and beautiful foliage, while summer can be warm but still enjoyable. It's generally not recommended to hike when the ground is wet due to the challenging and rugged terrain.

Is the Torne Mountain and Osio Rock Loop dog-friendly?

Yes, dogs are generally allowed on the trails within Norvin Green State Forest. It's always best to keep them on a leash and ensure they are comfortable with rugged, rocky terrain and potential scrambling sections.

Are there any permits or fees required to hike in Norvin Green State Forest?

No, there are typically no permits or entrance fees required to access the trails within Norvin Green State Forest, including the Torne Mountain and Osio Rock Loop.

Is this a loop trail, and how is it marked?

Yes, this is a loop trail, often described as a 'Figure-Eight Loop.' It primarily utilizes sections of the blue-blazed Hewitt-Butler Trail and the red-blazed Torne Trail. Following these blazes will guide you along the route.

Are there any unique landmarks or features on the trail?

A notable and unique feature on Torne Mountain is the 'Stone Living Room.' This area has a clearing with a circular arrangement of stone chairs, a fireplace, and even a 'recliner,' all set against the scenic backdrop of the Jersey Highlands.

Does the trail connect with other paths?

Yes, the route utilizes significant portions of the Hewitt-Butler Trail and the Torne Trail. While on the loop, you will be traversing sections of these well-known paths within Norvin Green State Forest.

Is the Torne Mountain and Osio Rock Loop suitable for beginners or families with young children?

This loop is generally considered 'easy' in terms of overall difficulty, but the terrain is surprisingly rugged with steep, rocky sections and some scrambling. While it's a shorter hike, beginners should be prepared for a challenging experience, and it might be difficult for very young children or those not accustomed to rugged trails.

What gear should I bring for this hike?

Given the rugged and rocky terrain, durable hiking boots with good ankle support are highly recommended. Trekking poles can also be very helpful for stability, especially on steep or uneven sections. Bring plenty of water, snacks, and navigation tools.

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