Pets allowed
Allowed with Restrictions
Elevation Gain
5,475.00 ft (1,668.78 m)
Trail type
20.00 mi (32.19 km)
Please respect the outdoors by practicing Leave No Trace. Learn more about how to apply the principles of Leave No Trace on your next outdoor adventure here.

The Mt. Lukens Loop is a 20 mile, mostly single track, route within Angeles National Forest and is rated as very difficult due to the length and the overall elevation gain. Adventurers will be rewarded with expansive mountain views and native desert plants. The route is mostly through exposed areas with little shade. Make sure to bring plenty of water. 

The route is popular amongst hikers, runners, backpackers, and mountain bikers. Stone Canyon is not as popular or crowded as other areas of Angeles National Forest, even on the weekends you may not encounter many people.

Start at George’s Gap trailhead, a paved parking lot off of Highway 2. From the trailhead begin with a steep climb to the top of Mount Hoyt. Enjoy the views from the top and then follow the well trodden foot path down the mountain to connect with the Grizzly Flat Trail. 

Follow Grizzly Flat Trail (which is a wide fire road) to the top of Mt. Lukens. Descend the mountain via Stone Canyon Trail, a single track on the east side of the mountain. When you reach the Stone Canyon parking area you will continue for a short distance on Stonyvale Road which connects back to the Grizzly Flat Trail. 

Parking is available at George’s Gap.
There is seasonal flowing water in Stone Canyon but don’t rely on that or any potable water. 

Logistics + Planning

Preferable season(s)




Parking Pass


Open Year-round



Desert Views. Mountain Views. Single Track.


Highway noise.

Trailhead Elevation

3,634.00 ft (1,107.64 m)

Highest point

5,056.00 ft (1,541.07 m)


Big vistas
Bird watching

Typically multi-day


Suitable for


Permit required



Nearby Adventures

Angeles National Forest, San Gabriel Mountains
San Gabriel + San Bernardino Mountains, California
San Gabriel Mountains, Los Angeles

Nearby Lodging + Camping

Los Angeles Metro Area, California
Angeles National Forest, San Gabriel Mountains
San Gabriel + San Bernardino Mountains, California


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