Pets allowed
Allowed with Restrictions
Elevation Gain
6,000.00 ft (1,828.80 m)
Trail type
There-and-back
Distance
18.00 mi (28.97 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.

Mount Wilson Toll Road is an 18-mile out-and-back dirt road trail that climbs from Altadena, California up to the top of Mount Wilson. The trail is windy, long, and exposed with scenic views overlooking Los Angeles to the west and the San Gabriel Mountains to the east. Although the trail is not particularly steep, the length of it combined with the steady climbing and exposure to the sun makes for a long and tiring day. This is a popular trail, and area, for trail runners, hikers, and mountain bikers. 

Henninger Flats Campground, located after 3 miles, offers shade, benches, and a nice place to take a break. The campground is first-come, first-serve and has three tiers of campsites that are rarely all the way full. The summit of Mount Wilson is another 6 miles past Henninger Flats. At the top you will be rewarded by scenic views and the Cosmic Cafe which offers warm food, snacks, and drinks. 

The trail is accessible year round although the summit may get some snow in winter. 

WATER

Water is unreliable and visitors should plan to bring and carry as much as they will need to reach the summit. Cosmic Cafe has potable water. 

PARKING AT THE TRAILHEAD

There is usually parking in the neighborhood near the trailhead. Make sure to read the parking signs clearly and be respectful of the residents. 

ADDITIONAL INFORMATION

Eaton Canyon: https://www.ecnca.org/

Angeles National Forest: https://www.fs.usda.gov/angeles

Mount Wilson Observatory: https://www.mtwilson.edu/

Logistics + Planning

Preferable season(s)

Spring
Fall

Congestion

High

Parking Pass

None

Open Year-round

Yes

Pros

Expansive Views. Peak Bagging.

Cons

Crowded.

Trailhead Elevation

1,300.00 ft (396.24 m)

Highest point

5,734.00 ft (1,747.72 m)

Features

Backcountry camping
Wildlife
Big vistas

Typically multi-day

No

Suitable for

Biking

Permit required

No

Location

Nearby Lodging + Camping

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