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Routes
Running trails & routes
United States
Maine
Knox County

Hosmer Brook and Red Diamond Trail Loop

Routes
Running trails & routes
United States
Maine
Knox County

Hosmer Brook and Red Diamond Trail Loop

Hard

4.8

(4840)

11,605

runners

Hosmer Brook and Red Diamond Trail Loop

01:00

6.91km

320m

Running

Embark on the Hosmer Brook and Red Diamond Trail Loop, a difficult jogging route spanning 4.3 miles (6.9 km) with a significant 1041 feet (317 metres) of elevation gain. You can expect to complete this challenging journey in about 1 hour. The trail winds through varied woodland terrain, where you…

Last updated: April 23, 2026

Waypoints

A

Start point

Get Directions

1

112 m

Camden Snowbowl Trailhead

Highlight • Trail

There is a fairly large parking lot by Hosmer Pond just past and to the left of the main Snow Bowl lot. From here you can easily hike Ragged or …

Tip by

2

2.98 km

Ragged Mountain Summit

Highlight • Summit

There is a tower at the summit of the mountain. To get here you climb around 1000 feet — there are a number of routes you can take depending on …

Tip by

3

3.19 km

Ragged Mountain Overlook

Highlight • Viewpoint

The top of the mountain is bald, and there are a number of overlooks around the summit and on the way up. From here you can see out past Camden to the ocean and the surrounding mountains.

Tip by

4

4.81 km

Hosmer Brook Trail

Highlight (Segment) • Trail

The trail here is easy and well marked. From the top you can run to Little Ragged and Ragged Mountain. This makes for a great descending trail.

Tip by

5

6.55 km

Camden Snowbowl

Highlight • Rest Area

The Snowbowl is a great place to ski in the winter, and offers a number of hiking and mountain biking trails in the summer. You can rent kayaks for use on Hosmer Pond.

Tip by

B

6.91 km

End point

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Way Types & Surfaces

Way Types

5.86 km

447 m

329 m

230 m

Surfaces

5.95 km

775 m

132 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (380 m)

Lowest point (70 m)

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Weather

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Saturday 18 July

22°C

13°C

-- %

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Frequently Asked Questions

Where does the Hosmer Brook and Red Diamond Trail Loop start, and is there parking available?

The loop typically starts from the area around the Camden Snowbowl Trailhead. Parking is generally available at the Camden Snowbowl facilities, which serves as a common access point for trails in the Ragged Mountain Preserve.

What is the terrain like for jogging on this loop?

This route is rated as difficult for jogging. It features significant elevation changes, with an ascent of over 300 meters. Expect varied terrain, including sections of the Hosmer Brook Trail and other paths within Ragged Mountain Preserve, which can include uneven surfaces, roots, and rocky sections. It's a challenging but rewarding jog.

Is the Hosmer Brook and Red Diamond Trail Loop dog-friendly?

Yes, dogs are generally permitted on trails within Ragged Mountain Preserve, including this loop. However, they should always be kept on a leash to protect wildlife and ensure a pleasant experience for all trail users. Please remember to pack out any waste.

What are the best times of year to jog this trail?

Spring, summer, and fall offer the best conditions for jogging this loop. In spring, you'll see new growth, while summer provides lush greenery. Fall is particularly scenic with vibrant foliage. Winter jogging is possible but requires appropriate gear for snow and ice, as conditions can be challenging and some sections may be slippery.

Are there any permits or entrance fees required for the Ragged Mountain Preserve?

Generally, there are no specific permits or entrance fees required to access the trails within Ragged Mountain Preserve, including the Hosmer Brook and Red Diamond Trail Loop. However, it's always a good idea to check the Camden Snowbowl website or local park information for any updates on regulations or potential parking fees, especially during peak seasons or events.

What can I see along the route?

The loop offers several points of interest. You'll pass by the Hosmer Brook Trail, and ascend towards the Ragged Mountain Summit. Along the way, you can enjoy scenic vistas from the Ragged Mountain Overlook, providing expansive views of the surrounding landscape.

Does this trail intersect with other well-known paths?

Yes, the route incorporates sections of several other trails within the preserve. You'll find yourself on parts of the Hosmer Brook Trail, the Ragged Mountain & Spruce Mountain Trail (Georges Highland Path), the Red Diamond Trail, the Kuller Trail, and the Pitchpole Trail, among others.

Is this loop suitable for beginner joggers?

Given its 'difficult' rating, significant elevation gain, and varied terrain, this loop is generally not recommended for beginner joggers. It's better suited for those with some trail running experience and a good level of fitness. Beginners might find shorter, less strenuous trails in the area more enjoyable.

What should I wear and bring for jogging this trail?

For this challenging loop, wear appropriate trail running shoes with good grip. Dress in layers suitable for the weather, as conditions can change, especially at higher elevations. Bring plenty of water, snacks, a map or GPS device (like komoot's app), and a first-aid kit. Trekking poles can also be helpful for the steeper sections.

Are there any cafes or facilities near the trailhead?

The loop starts near the Camden Snowbowl, which often has facilities available, especially during its operating seasons. For cafes and other amenities, the town of Camden is a short drive away and offers various options for refreshments and dining after your jog.

What are the winter conditions like for jogging on this trail?

Jogging the Hosmer Brook and Red Diamond Trail Loop in winter can be challenging. Expect snow and ice, especially on higher elevations and shaded sections. Microspikes or snowshoes may be necessary, and some parts of the trail might be less accessible or marked. Always check local conditions and forecasts before heading out in winter.

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