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San Antonio Falls - Sierra Club Ski Hut - Devil's Backbone

Difficult
  4.8 ( 21 ) Favorite

Trail

10.8 mile 17.3 kilometer loop
68% Runnable
Difficult

Elevation

Ascent: 3,810' 1,161 m
Descent: -3,813' -1,162 m
High: 9,991' 3,045 m
Low: 6,178' 1,883 m

Grade

Avg Grade: 13% (8°)
Max Grade: 72% (36°)

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Trail shared by John McKinney

A fun but strenuous run around some key features in the area.

John McKinney

Features Spring · Views · Waterfall · Wildlife

Overview

This run hits all the highlights in the area including the falls, ski hut, summits, and the Devil's Backbone Trail. This run is an undertaking for sure, not just because of its length, but the grade of the climbs are fairly intense.

Need to Know

This is a strenuous run; make sure you're prepared for it.

Description

From the parking area at Manker Flat, head north on Baldy Road #3N01, a service road with an easy grade. At 0.5 miles, the road turns to head back south; at this northern point, runners will have a nice view of the falls, but the adventurous can reach the bottom of the falls by following a rough trail further north. Do not try to climb the falls.

Return to the road and continue on; at almost one mile, there is a junction with Baldy Bowl Trail #7W02 which heads north. Take a left to follow Baldy Bowl Trail #7W02 as it ascends steeply along the edge of the San Antonio Canyon. The trail is steep but at least it is shaded by white fir, oaks and Jeffery pine trees. The right turn for the Sierra Club ski hut is two miles from the junction with Baldy Road #3N01. There is a spring near the hut.

Return to Baldy Bowl Trail #7W02 and continue to climb up steep switchbacks to a shady ridge that overlooks the headwaters of the San Antonio Canyon. The trail continues to be quite rugged, but on a clear day the views from the summit of Mount San Antonio (aka Mt. Baldy), reached four miles into the run, are fantastic. The Devil's Backbone, Mt. Harwood, the San Gabriel and San Bernardino mountain ranges, and the Mojave Desert are all visible.

Runners of course can return the way they came, but a somewhat easier (though longer) way down is to follow the Devil's Backbone Trail off the summit. The grade this direction is much gentler, especially as you get further from the peaks. At mile six, Turkey Shoot trail splits off to the right; continue on the Devil's Backbone Trail until you reach Mt. Baldy Notch and the junction with Baldy Road #3N01 at 7.1 miles. Head down the easy grade of the fire road enjoying the views as you descend back to the parking lot or take the ski lift from the notch.

Thanks to John McKinney, The Trailmaster, for sharing this trail description. To learn more about trails in California, check out his guides at The Trailmaster Store.

Flora & Fauna

White fir, Jeffery pine, sugar pine, lodgepole pine and limber pines are in the area. Watch for bighorn sheep.

History & Background

Mount San Antonio was named in 1790 after Saint Anthony, a 13th-century friar from Italy. In the 1870s, it was nicknamed "Old Baldy" because of its impressively bare summit.

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Sep 30, 2018
Linda Lee
10.8mi
Jun 26, 2018
Kenneth Y

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Trail Ratings

  4.8 from 21 votes

#1

in Mt. Baldy

#294

Overall
  4.8 from 21 votes
5 Star
81%
4 Star
14%
3 Star
5%
2 Star
0%
1 Star
0%
Featured Run Rankings

#1

in Mt. Baldy

#48

in California

#294

Overall
133 Views Last Month
3,969 Since Aug 9, 2017
Difficult

0%
0%
0%
21%
74%
5%

Photos

Summit of Mt. San Antonio facing south-east.
Aug 5, 2015 near Wrightwood, CA
Windswept trees just below the summit...
May 20, 2019 near Wrightwood, CA
Downed Tree...
May 20, 2019 near Wrightwood, CA
Looking toward a ridge section with great views!
Aug 1, 2015 near Wrightwood, CA
Frosty weather...
May 20, 2019 near Wrightwood, CA
A brief moment of sunlight...
May 20, 2019 near Wrightwood, CA

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