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greenBlue Gabrielino Trail: JPL to the USFS Dam

  4.1 ( 50 ) Favorite


8.8 mile 14.1 kilometer out and back
75% Singletrack


Ascent: 577' 176 m
Descent: -578' -176 m
High: 1,689' 515 m
Low: 1,156' 352 m


Avg Grade: 2% (1°)
Max Grade: 9% (5°)


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Map Key

Trail shared by Chris W with improvements by Payton J

An easy trail following the Arroyo.

Chris W

E-Bikes Unknown

Features -none-

Family Friendly It is a simple easy trail with some advanced side features such as berms in the canyon wall and small jumps. Experienced and beginners alike can enjoy it.

90% of this ride is inside the Angeles National Forest, which prohibits eMTB usage on all trails except mapped OHV routes.


An easy out and back ride up the Arroyo from the JPL parking lot. This is a good beginner ride.

Need to Know

This trail is very popular with hikers, campers, and equestrians. Observe trail etiquette (yield to hikers, stop for equestrians) and use a bell.

There are several stream crossings, all usually rideable.


Park at the Windsor Lot overlooking Hahamonga Watershed Park and the Jet Propulsion Lab. Head north past the Fire Danger sign and along the paved access road. Follow signs for the Gabrielino, staying to the left. This trail meanders up the Arroyo past the Gould Mesa Campground and a couple of picnic areas. This section of the Gabrielino Trail (NRT) is considered easy compared to other routes and trails in the area because it is relatively flat, the trail stays fairly wide, and there is little height exposure. There are a few sandy spots and some short rocky sections.

At the Paul Little picnic area, the Gabrielino Trail (NRT) splits off to the right and climbs the canyon wall in a series of steep, exposed switchbacks, eventually proceeding above the USFS debris dam and further up the Arroyo Seco towards the bottom of Ken Burton Trail. For this ride, stay to the left and eventually you'll come to the base of an old debris dam with a steady waterfall flowing down.

When you're ready, turn around and head back out the way you came.

This trail gets good protection from the sun due to the steep canyon walls on both sides of the trail. Some trees also provide shade in the middle of the day.

History & Background

You'll see several cabin foundations that date back to the early 20th century.

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Features, E-Bikes Allowed

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Jul 10, 2019
Russell A
Jul 2, 2019
Jun 16, 2019
L Kon
May 22, 2019
Raul Ruvalcaba
Apr 20, 2019
Payton J
I went with some newer riders. Slow and steady. Every stream crossing took 10 minutes. The jumps and new lines are what kept me up. : ) 7mi — 4h 00m
Apr 20, 2019
Nat Savage
Mar 16, 2019
Will Henry
Dec 10, 2018
Edwin Lee

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Trail Ratings

  4.1 from 50 votes


in Pasadena


  4.1 from 50 votes
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in Pasadena


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