Arroyo Seco

3.47 out of 5
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↑ 3,500 ft
↓ 3,800 ft
elevation (ft)

Out & Back
Trail Description
About this trail
This is considered a "beginning" mountain bike trail in the San Gabriels, where most everything is just up or down. After you get your bike and out of your car, go past the yellow gate, and go down the pavement for just under a mile. You'll pass JPL to your left, and several other pseudo-trails on your left and right that don't go anywhere.

You'll reach a fork in the road, and take the left fork. If you take the right fork, you're on the wrong trail. Continue through the wide double track, and you'll be in the forest in no time. At about 2.5 miles, you'll hit your first creek crossing (there are five). The first three are pretty close together, and the second one is usually the worst. The higher you go, the more technical the trail gets. There is one area after the fourth creek crossing that I call "Satan's rock garden" because of the amount of rocks you have to go over with slick wheels from the creek.

Towards the end, the trail becomes singletrack, but it doesn't last long. You'll reach the sixth creek crossing, and you can continue on, but it's a lot of hike-a-bike from that point on.

Turn aronnd, and enjoy the downhill. Just becareful of all the dogs off-leach (no, they're not supposed to be), the horses, the hikers, and all the kids who leave their bikes in the middle of the trail.

The best part about this trail is it's the only shaded trail in the area, which is really nice on a hot summer day.
added by stripesTrailblazer
Trail Features
Trail features
  • Lift Service
  • Drinking Water
  •   Night Riding
  • Pump Track
  • Restrooms
  • Winter Fat Biking
Directions to Trailhead
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Trail Q&A
Rider Questions


Q: Closing time -Guest

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Local Info & Nearby Trails
Trail Check-ins
Trail Check-ins
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Recent Trail Check-ins     (122 total check-ins)
  Dv_Cho   on Aug 31, 2019
  Tikitico   on Jul 6, 2019
  portery99   on Jul 3, 2019
  portery99   on Jun 30, 2019
  powderski   on May 5, 2019
Photo & Video Gallery (14)
Trail Photos & Videos (14)
Reviews (17)


December 25, 2017
powderski Gramcounter  
Review: good trail for beginers

Granny Gear

January 28, 2017
Review: Was on this trail a week ago after the first week of rain. All of the rock gardens got harder where the trail washed out. The creek crossings were insane and where the trail didn't flood to what appeared to be about 6 feet, it slid and slid. Definitely large pieces of trail missing, new boulders in the middle of flowy downhill sections, and a lot more challenge as the usual hardpack is covered in rocky debris. One old roller looked like it was ruined by a torrent of water and is cut a few inches deep now and sent me over the bars when my wheel hit it and bounced my bike back under me (definitely a hard part of the trail on the return as you now have a cut directly to a small upward rolling hill.) Beginners will walk a lot of this trail in the weeks until the trail smooths back out.

February 26, 2016
Review: Haven't really ridden this trail since it was washed out several years ago. This is no longer a beginner trail, I would say more blue square. Much more fun than it was before, if you are a fairly good rider. Rocks every where, sand every where, lots of shade, I love it. I would not recommend for beginners or kids, you will not have a good time.

June 3, 2015
Review: I've been riding this trail weekly for 2 years since I started mountain biking seriously and while it's certainly gotten lots easier as I become I suppose an "intermediate" rider, there's still plenty of fun and challenge to be had with the rock gardens, etc. I'm 54, pretty fit, riding a rigid single speed, and this trail is just about perfect for me and my rigid ss rig, unless I want more climbs. I can get some serious speed going on my ss on this trail (as long as I go during the week when it's not too busy with hikers).

World Champ

February 20, 2015
Greg Heil World Champ  
Review: Nice trail leading into El Prieto


October 29, 2014
Review: A bit more than a beginner trail. Either wide & sandy or narrow & rocky with a few creek crossings thrown in. Enough technical stuff to make it fun.

March 30, 2014
Review: I have been mountain biking for many years now, I would not consider myself a beginner. This trail was really challenging for me, lots of rocks all over the place, lots of walking the bike. I'm not saying it is extremely hard, but I would not call this beginner trail. Everyone can get off the bike and push it, I guess anywhere... In my mind easy means that you basically don't have to get off your bike. Am i wrong? I saw other bikers getting off their bikes pushing it. So it's not just me. If this is called easy then I can't imagine what a challenging hard trail is. Do you have to carry the bike above your head? I feel like rating a trail hard means then you basically can't bike just push your bike all the way.


March 20, 2014
Review: The recent storm washed the singletrack out pretty bad, too many trees and debris in the way to make this ride fun for beginners at the moment. This summer the trail should be broken in again for riders to fully enjoy.


November 11, 2013
mc625569 Poseur  
Review: Flat trail along a creek - parts of the ride a unfortunately a bit littered up which is a bummer, but a great place to go with kids or people who just want to ride bikes, not really seasoned MTB vets.

Granny Gear

August 15, 2013
mathechew Granny Gear  
Review: One of the few trail around here that reminds me of Northern California. It's definitely open again, and has plenty of shade and some creek crossings! Just stick to the main path.


Granny Gear

September 19, 2013
Zamorly Granny Gear  
Review: I have a question.
Would you say this trail is good also for an 8 and 10 years old kids or stay away. Note: my kids are not really experienced in MTB...they ride very well but not MTB

Arroyo Seco MTB Trail 3.47 out of 5 based on 17 ratings. 17 user reviews.
Trail Conditions
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