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Keller Peak via Exploration Trail



12.6 mile 20.3 kilometer out and back
90% Runnable


Ascent: 2,022' 616 m
Descent: -2,022' -616 m
High: 7,864' 2,397 m
Low: 6,010' 1,832 m


Avg Grade: 6% (3°)
Max Grade: 18% (10°)


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Trail shared by Jason Ethridge

Run up to, and enjoy the views from, the oldest fire lookout in the San Bernardino Mountains.

Jason Ethridge

Features Birding · Views · Wildflowers · Wildlife

The lookout is open to the public from Memorial Day to first snow; 9 am - 5 pm.


This route will take you to the oldest fire lookout in the San Bernardino Mountains. From here, on a clear day, you can see from the Mojave Desert to Catalina Island! The volunteers are incredibly friendly and happy to answer questions and demonstrate their equipment.

Need to Know

You can drive your car up to the lookout (though parking is VERY limited) if you have children or other family members who can't make the journey on foot.


From the trailhead, take the trail to the right where you'll see an information sign and a half-log bench. Follow this path as it traverses some creek beds and climbs a rocky ridge before entering a black oak forest community. Enjoy the shade of the oaks and admire the towering sugar pines as you ascend the western flank of Keller Peak. Between miles 3 and 4, scenic vistas of the high San Gabriel Mountains open up to the west. Just after 4 1/2 miles the Exploration Trail ends at Keller Peak Road. Follow this one lane paved road 1 1/2 miles to the peak of the mountain and the fire lookout that is perched here.

History & Background

Just below the lookout, along the road, look for the memorial plaque for the WWII aircrew that lost their lives when their B-26 crashed into the peak on Dec. 31, 1941.

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Dogs Allowed, Flora & Fauna, Runner Notes


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Nov 25, 2018
Jay Salazar
Clean trail. Beautiful scenery. Peaceful.
Jun 25, 2018
Joanne Taylor
Awesome day on the trail 12.5mi
May 5, 2018
Jeremy Wassenaar
Such a fun one. Thanks Utah for the elevation prep

Trail Ratings

  5.0 from 3 votes


  5.0 from 3 votes
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in California


40 Views Last Month
5,003 Since Jun 27, 2016



Looking across the San Bernardino Mts, at Mt. San Antonio (Baldy), in the San Gabriel Mts, from the Keller Peak Fire Lookout.
Jun 27, 2016 near Running…, CA
Looking up at the northern side of Keller Peak from the Exploration Trail.
Jun 27, 2016 near Running…, CA
A majestic sugar pine stands along the Exploration Trail in the National Children's Forest, on the way to Keller Peak.
Jun 27, 2016 near Running…, CA
The Keller Peak Fire Lookout.
Jun 27, 2016 near Running…, CA
The friendly volunteers at Keller Peak Fire Lookout.
Jun 27, 2016 near Running…, CA
Keller Peak Lookout. with permission from aliandjgohiking
Jun 30, 2016 near Running…, CA


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