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San Diego County
Mount Laguna

Pacific Crest Trail: Thing Valley to Boulder Oaks

Routes
Hiking trails & Routes
San Diego County
Mount Laguna

Pacific Crest Trail: Thing Valley to Boulder Oaks

Moderate

4.0

(2)

44

hikers

Pacific Crest Trail: Thing Valley to Boulder Oaks

03:53

13.9km

110m

Hiking

The Pacific Crest Trail: Thing Valley to Boulder Oaks offers a fascinating journey through Southern California's diverse backcountry. You'll traverse varied terrain, starting in chaparral and scrub oak before ascending into beautiful pine forests, a striking contrast that makes this section unique. The path winds through areas with large granite…

Last updated: June 9, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

Parking

Get Directions

1

2.34 km

PCT junction with road & trail to Observatory

Highlight • Trail

At this junction, the Pacific Crest Trail crosses the Thing Valley Road and Morris Ranch Road. The Star Party Trail – that leads to the Mount Laguna Observatory operated by …

Tip by

2

3.21 km

Beautiful pine forest

Highlight • Forest

Coming from the desert, this awesome pine forest section is a real surprise. Take in the smell of hot pine needles while hiking through. There is at least one spot …

Tip by

3

5.94 km

Campsites at Long Canyon Creek

Highlight • Rest Area

Just off the Pacific Crest Trail, there are some flat open spots to rest or pitch tents. There might be water in Long Canyon Creek.

Tip by

4

6.75 km

Next to some old trees, there is enough room for at least five tents. There is some shade and maybe water in Long Canyon Creek. It is also a nice spot to rest.

Tip by

5

8.34 km

Campsite below big tree

Highlight • Rest Area

If you want to rest in the shade of a huge tree or spend the night, this is a really nice spot just next to the Pacific Crest Trail. There is no water, though.

Tip by

6

11.7 km

Small campsite

Highlight • Rest Area

Nestled between some shrubs, there is room for two small tents or some cowboy camping. However, there is no shade.

Tip by

B

13.9 km

End point

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Way Types & Surfaces

Way Types

12.6 km

1.13 km

< 100 m

< 100 m

Surfaces

13.2 km

382 m

183 m

< 100 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 (1,830 m)

Lowest point (1,340 m)

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Weather

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Today

Wednesday 8 July

36°C

16°C

0 %

Additional weather tips

Max wind speed: 10.0 km/h

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Frequently Asked Questions

Do I need a permit to hike this section of the PCT or enter Cleveland National Forest?

For day hikes on the Pacific Crest Trail within the Cleveland National Forest, a permit is generally not required. However, if you plan to camp overnight, a California Fire Permit is necessary for campfires or stoves. Always check the official USDA Forest Service website for the most current regulations before your trip: usda.gov.

Where can I access the Pacific Crest Trail: Thing Valley to Boulder Oaks section and is there parking?

This section of the Pacific Crest Trail can be accessed from Thing Valley Road, which serves as a common access point. Parking availability can vary, so it's advisable to arrive early, especially during peak hiking seasons. Specific parking details for this exact trailhead might require local inquiry or checking recent hiker reports.

Is this section of the Pacific Crest Trail dog-friendly?

Yes, this section of the Pacific Crest Trail is generally dog-friendly. However, dogs must be kept on a leash at all times to protect wildlife and ensure the safety of other hikers. Be sure to pack enough water for your dog, as sources can be scarce, especially during warmer months.

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

The best time to hike this trail is typically in the spring (March to May) when wildflowers are abundant and the landscape is green. Fall also offers pleasant temperatures. Summers can be very hot and dry with limited shade, making water scarcity a significant concern. Winters can bring cooler temperatures, but snow is rare at these elevations.

What kind of terrain and scenery can I expect on this hike?

The trail offers a diverse experience, traversing through typical Southern California chaparral and scrub oak. You'll encounter rolling hills, gullies, and ravines. There are also lush pockets with large oaks and sycamores near creek beds, particularly after winter or early spring rains. Expect rewarding views of the surrounding mountains and potentially distant vistas of San Diego or the Anza-Borrego Desert from higher points.

Are there any notable landmarks or viewpoints along the way?

Yes, along this route, you'll pass several interesting points. You'll find a significant PCT junction with road & trail to Observatory. The trail also features a Beautiful pine forest, offering a change from the chaparral. While not directly on this segment, the PCT in this area passes beneath Interstate 8 and offers views of Lake Morena.

What wildlife might I encounter on the trail?

Hikers on this section of the PCT might encounter common Southern California wildlife. Keep an eye out for mule deer. It's also important to be aware of rattlesnakes, especially during warmer months, and give them a wide berth. Various bird species are also common in the chaparral and forest areas.

Are there reliable water sources available along the route?

Water sources can be scarce on this section of the PCT, especially during dry periods or later in the season. While there are Campsites at Long Canyon Creek and a Medium-sized campsite & possible water, these are not guaranteed to have flowing water. It is crucial to carry sufficient water for your entire hike and check current water reports before you go.

Does this trail intersect with other well-known paths?

Yes, this route is primarily a section of the Pacific Crest Trail. As such, it extensively follows the PCT - California Section A. It also utilizes portions of the Pacific Crest National Scenic Trail #2000, Thing Valley Road, and Morris Ranch Road for segments of the journey.

What is the difficulty level of this hike?

This hike is rated as moderate. While the overall elevation gain is not extreme, there are rolling hills and gradual climbs, particularly as the trail heads towards the Laguna Mountains after passing under Interstate 8. Hikers should be prepared for sun exposure and potentially limited shade, which can add to the challenge.

Are there any campsites along this section of the PCT?

Yes, there are several primitive campsites along this section of the PCT. You can find Campsites at Long Canyon Creek, a Medium-sized campsite & possible water, a Campsite below big tree, and a Small campsite. Remember to practice Leave No Trace principles and check for any fire restrictions.

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