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United States
California
San Bernardino County
Running Springs

Exploration Trail

Hard

2.7

(4)

86

hikers

Exploration Trail

06:20

21.5km

620m

Hiking

Hike the difficult 13.3-mile Exploration Trail in the National Children's Forest, gaining 2048 feet with panoramic views of the San Gabriel

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

San Bernardino National Forest

Waypoints

A

Start point

Parking

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1

1.97 km

Exploration Trail

Highlight (Segment) • Trail

The Exploration Trail is a non-motorized, family friendly trail. The trail was designed by children along with help from the U.S. Forest Service personnel.

Tip by

2

10.7 km

Keller Peak

Highlight • Summit

Keller Peak sits at an elevation of 7,882 feet. At the top there is the Keller Peak Fire Lookout, which is the oldest fire tower still standing in San Bernardino …

Tip by

B

21.5 km

End point

Parking

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Way Types & Surfaces

Way Types

17.3 km

4.02 km

160 m

Surfaces

16.7 km

4.18 km

647 m

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Elevation

Elevation
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Weather

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Today

Sunday 8 November

19°C

8°C

0 %

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Max wind speed: 7.0 km/h

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Frequently Asked Questions

Where can I park to access the Exploration Trail?

Parking is available at the Children's Forest Visitor Center, which is conveniently located near the Deerlick Fire Station. This serves as a good starting point for your hike.

Is the Exploration Trail dog-friendly?

Yes, the trail is dog-friendly. However, please ensure your dog is kept on a leash, as this is a general regulation within the San Bernardino National Forest to protect wildlife and other hikers.

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

The trail offers a diverse experience throughout the year. While it's great for hiking during warmer months, it can also be used for snowshoeing or cross-country skiing in winter. For expansive views and comfortable hiking, late spring to early fall is generally ideal, but be prepared for varying conditions.

Are there any permits or fees required to hike in the National Children's Forest?

While the trail is located within the National Children's Forest, there are typically no specific permits or entrance fees required for day hiking on the Exploration Trail itself. However, it's always a good idea to check the U.S. Forest Service website for any current alerts or regulations before your visit.

How difficult is the Exploration Trail?

The trail is generally considered to be of moderate to strenuous difficulty for hiking. It features a 12% grade and includes rocky, bouldery, and steep sections. About half of the hike is exposed, so be prepared for sun exposure.

What kind of scenery and terrain can I expect on the route?

You'll experience diverse terrain, from natural ground with rocky and bouldery sections to forested areas. The scenery includes towering sugar pines, fire-adapted manzanita shrubs, and black oak forests. As you ascend, you'll be treated to expansive vistas of the high San Gabriel Mountains, and panoramic views of the Angeles National Forest, including peaks like Cucamonga, Mount Baldy, and Ben Pal, from a clearing near the end of the trail.

What notable features or landmarks will I see along the route?

The trail leads to Keller Peak, where you can find the oldest standing fire tower in Southern California, built in 1926 and still in use. There's also a 0.75-mile Interpretive Trail Loop section near the Upper Exploration trail with educational panels, offering insights into the local environment.

Does this route intersect with other trails?

Yes, the route primarily follows the Exploration Trail, but it also passes through sections of Mill Peak Road, Dry Creek Trail, and Trail of the Phoenix.

What makes the Exploration Trail unique?

This trail has a unique origin story: it was designed by children in collaboration with the U.S. Forest Service and other professionals. This design philosophy is reflected in the educational aspects, such as the Interpretive Trail Loop, making it a special experience within the National Children's Forest.

How long does it typically take to complete the hike?

The full hike, covering approximately 21.5 km (13.4 miles), typically takes around 6 hours and 20 minutes to complete, depending on your pace and stops for enjoying the views.

Is the Exploration Trail suitable for families with children?

Given its moderate to strenuous difficulty and length, the full trail might be challenging for very young children or beginner hikers. However, the 0.75-mile Interpretive Trail Loop section near the Upper Exploration trail, with its educational panels, could be a more suitable and engaging option for families looking for a shorter, more accessible experience within the National Children's Forest.

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