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blueBlack Mt. Wilson Toll Road

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9.1 mile 14.7 kilometer point to point


Ascent: 4,405' 1,343 m
Descent: -87' -26 m
High: 5,647' 1,721 m
Low: 1,256' 383 m


Avg Grade: 9% (5°)
Max Grade: 21% (12°)


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Trail shared by Chris W with improvements by Doug E

A long and steady grind up Mt. Wilson.

Chris W

E-Bikes Unknown

Features -none-

Family Friendly Wide easy trail with minimal exposure. It is a bit steep so does require low gearing and/or strong legs.


This is a long fire road climb up to the top of Mt. Wilson. It just keeps going and going. The grade is pretty consistently around 10%. From the bottom up to Henninger Flats is about 2.5 miles of wide open fire road with no shade. When you reach Henninger Flats, you'll find some large trees, picnic tables, a water fountain, and the Henninger Flats Museum.

As you continue up, you'll find a split in the fire road. Keep right and climb. Near the top, you'll find a bit more shade in spots. The view is fantastic on a clear day as you come around to the south side of the ridge and climb the final section to the top.

At about 7.5 miles, you'll intersect with the Mt. Wilson Trail. Keep left and rejoin onto the Mt. Wilson Toll Road in about 0.5 mile.

There is a great lookout at the top. Be sure to check out the Mt. Wilson Observatory if you have time.


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Mar 23, 2019
Ben Schmitt
8mi — 1h 00m
Dec 27, 2018
John Gump
rode up to henniger flats, should go back and go all the way up to Wilson. 5mi
Jun 23, 2018
Ganegoda Perera
Oct 12, 2017
Luis Perez
5000ft climb with views of Los Angeles county 7mi
Sep 1, 2017
Oscar Mendoza
Jul 8, 2017
Alex Hatem
Feb 27, 2016
Kyle Chin
Jan 14, 2016
Mike Obermeyer
It hailed and rained a little at the top. I was glad that I had a hat and some winter gloves in my backpack for the ride down. the cosmic cafe had ... — 5h 12m

Trail Ratings

  4.1 from 18 votes


  4.1 from 18 votes
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in California


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12,338 Since Apr 16, 2014
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no water at henninger flats. bring your own. Jun 4, 2018
Jeff Tischer
Los Angeles, CA
Jeff Tischer   Los Angeles, CA
This is a long brutal suffer-fest as the climb just doesn't let up. Leave early in the summer or you'll cook as there is a lot of exposure down low and higher. I made the mistake of riding my old hardtail with 1.75 street/hardpack tires and there is a moderate amount of loose rock and sand up higher. Use a good trail bike on this. There are some nice views along the way though. Jul 29, 2018

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