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Routes
Running trails & routes
United States
California
San Bernardino County

Castle Rock and Bluff Lake Trail

Easy

4.7

(9345)

10,277

runners

Castle Rock and Bluff Lake Trail

00:36

4.75km

90m

Running

This easy 3.0-mile jogging trail takes you past Castle Rock viewpoints and the serene Bluff Lake Reserve in San Bernardino National Forest.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Bluff Lake Reserve

San Bernardino National Forest

Waypoints

A

Start point

Parking

Get Directions

1

421 m

Bluff Lake Reserve

Highlight • Lake

The lake is a pristine mountain marsh that sits at 7,600 ft above sea level. The trail around the lake is easy and surrounded by boulders and towering pines.

Tip by

2

1.02 km

Bluff Lake Reserve

Highlight • Lake

The preserve encapsulates a serene mountain marsh with sedge, grasses, and endangered bluegrass and checkerbloom. The lake is azure and pillars of quartz monzonite decorate the landscape.

Tip by

3

2.66 km

Castle Rock

Highlight • Natural Monument

Castle Rock is a boulder pile that makes a popular destination for its scenic views that look out upon Big Bear Lake and the surrounding mountains.

Tip by

B

4.75 km

End point

Parking

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Way Types & Surfaces

Way Types

3.96 km

787 m

Surfaces

4.19 km

559 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 (2,320 m)

Lowest point (2,250 m)

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Weather

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Thursday 28 May

9°C

-2°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the difficulty level of the Castle Rock and Bluff Lake Trail for jogging?

The komoot tour for this route is rated as easy. However, the overall Castle Rock and Bluff Lake Trail is generally considered moderate to difficult, especially the initial climb to Castle Rock. This section involves a significant elevation gain and can be steep, making sustained jogging challenging in parts. After the initial climb, the trail often levels out, particularly on the way to Bluff Lake, where it becomes flatter and more suitable for a relaxed jog or nature walk.

What kind of views and natural features can I expect along the route?

Joggers can expect diverse and scenic beauty. From Castle Rock, you'll find spectacular panoramic vistas of Big Bear Lake and the surrounding mountains. As you continue towards Bluff Lake, the scenery transitions to a beautiful forest setting with towering pines, white fir trees, and cedars. Bluff Lake itself is a highlight, featuring a 20-acre lake and meadow, surrounded by majestic quartz monzonite outcrops and diverse flora, including wildflowers. There's also a notable long wooden boardwalk over protected brush land at the lake.

Is the Castle Rock and Bluff Lake Trail dog-friendly?

Yes, the trail is generally dog-friendly. However, dogs must be kept on a leash at all times to protect the local wildlife and ensure a pleasant experience for all visitors. Be prepared for some steep sections that might be challenging for smaller or less agile dogs.

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

The best time to jog the trail is typically during the spring, summer, and fall months when the weather is mild and the trail is clear of snow. Spring offers wildflowers, while fall provides beautiful foliage. Winter jogging is possible but requires appropriate gear due to snow and ice, and some sections may be inaccessible or more challenging.

Do I need any permits or is there an entrance fee for the San Bernardino National Forest?

While there isn't a specific permit required for jogging the Castle Rock and Bluff Lake Trail itself, you may need an Adventure Pass for parking in certain areas within the San Bernardino National Forest. It's always best to check the latest regulations on the USDA Forest Service website before your visit for current requirements and any fire restrictions.

Where can I park to access the Castle Rock and Bluff Lake Trail?

Parking is available near the trailhead, often along the roadside or in designated parking areas. Due to the trail's popularity, especially on weekends, parking can fill up quickly. Arriving early in the morning is recommended to secure a spot and avoid crowds.

Does the trail intersect with other well-known paths?

Yes, the route also passes through sections of the Castle Rock Trail 1W03, Kidd Creek Road, Siberia Creek Trail, Bluff Mesa Trail, and the Champion Lodgepole Trail 1W11. This offers opportunities to explore different parts of the forest or extend your jog.

Is the Castle Rock and Bluff Lake Trail a loop or an out-and-back route?

The full Castle Rock and Bluff Lake Trail is typically done as a loop, offering a diverse experience. However, you can also choose to do an out-and-back section, such as just the climb to Castle Rock for the views, or a flatter section towards Bluff Lake.

What should I wear or bring for jogging on this trail?

Given the varying terrain, wear sturdy jogging shoes with good grip. Layers are advisable as temperatures can change, especially with elevation gain. Bring plenty of water, snacks, a map or GPS (as some parts can be hard to follow), and sun protection. For the steeper sections, trekking poles can be helpful.

Are there any historical or unique features to look out for?

Beyond the natural beauty, keep an eye out for the ruins of an old cabin or resort from the 1890s near Bluff Lake. The picturesque setting of Bluff Lake has also served as a filming location for movies like "Parent Trap" and "Dr. Dolittle 2".

How long does it typically take to jog the Castle Rock and Bluff Lake Trail?

The komoot tour for this route is estimated to take around 36 minutes for jogging. However, the overall loop trail, which is approximately 5.8 miles (9.3 km), can take significantly longer depending on your pace, fitness level, and how much time you spend enjoying the views and features. The initial steep climb to Castle Rock will likely slow your pace.

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