Arroyo Seco Trail is a 19.1 mile heavily trafficked out and back trail located near Altadena, California that features a waterfall and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs and horses are also able to use this trail.

Length19.1 miElevation gain2,979 ftRoute typeOut & back
BackpackingCampingHikingHorseback ridingMountain bikingNature tripsWalkingBike touringBird watchingRunningDog friendlyForestPartially pavedRiverViewsWaterfallWildflowersWildlifeOver grownRocky
Waypoints (0)
Weather
UV Index
Daylight
Reviews (183)
Photos (2,928)
Activities (141)
Completed (712)
View user's profile page
Soufo C.
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarMarch 27, 2021
Hiking

This may be the most beautiful hike I’ve ever done in LA (for the terrain, not the views). The variety was extraordinary. Started on paved road, followed by accessible standard hiking (high traffic, lots of bikes). Up a small incline, which dumps you into a gorgeous white stone valley. If you block out the distant hum of motorcycles, you think you might be the only person on earth. Followed by the most beautiful section of hiking I’ve see in a long time. Narrow single trail, running along the river, on the side of the mountain. Isolated, even on a Saturday afternoon. Around 7.5 miles, I got hit with a weird exhaustion. It was probably me, not the trail, though the imperceptible constant incline does catch up to you. I made it to the sweeping Mountain View’s, and finished the trail at 11 miles on Highway 2. I realized that I was physically drained (again, really surprised by that) but also emotionally drained by how beautiful it was. I wasn’t ready to repeat it on the way back. So I hitched a ride to my car.

View Soufo's activity
View user's profile page
Cristhian Mace
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFebruary 28, 2021
Hiking
View Cristhian's activity
View user's profile page
Rudy Gold
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFebruary 17, 2021
Hiking

Great. Easy

View Rudy 's activity
View user's profile page
Noelia Cortes
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFebruary 16, 2021
HikingGreat!
View user's profile page
Ryan Wolf
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarFebruary 14, 2021
HikingGreat!Rocky

02/13/21 Absolutely beautiful being out there. If you are hiking, I suggest going early in the morning (around 5 or 6). The first 3-5 miles are moderately trafficked by mountain bikers in the early morning but heavily trafficked towards the late morning/afternoon. When you get to Paul Little take a right; that keeps you on the path towards Switzer Falls. We didn’t make it all the way to the falls, another biker told us there was a mudslide and you need rope to cross. Also, if you don’t like using nature as your toilet, there are bathrooms at the Gould Mesa campground a few miles into the trail.

View user's profile page
Jonas Molecule
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarFebruary 7, 2021
Mountain biking
View Jonas's activity
View user's profile page
Sivle Ieanim
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarNovember 28, 2020
Cross-country skiing
View Sivle's activity
View user's profile page
Elaina Karras
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarSeptember 29, 2020
Closed

I didnt actually do the trail bc I got here and it was closed... :/

View user's profile page
Sergey Grankin
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarJuly 15, 2020
Hiking

Great trail, especially if training for a longer hike or getting long distance hikes in. Fairly shaded in the first 3 miles and the last 2 miles but in between is a bit more exposed. The miles in the middle are pretty underused so many parts have bushes to walk through and a few downed trees. If you loose the trail when you get to the dry creek bed, follow the creek bed and you’ll get to the trail again. Mostly flat with a solid push at the end. Beautiful hike but warm in the summer. I’d give it a few months before doing the entirety of this hike.

View user's profile page
Cody Viera
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarJuly 5, 2020
Hiking
View Cody 's activity
View user's profile page
Kierstyn Jacobs
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarJune 26, 2020
HikingOver grown

this trail is perfect for all types of hikers. mainly flat at the beginning but harder as you go! Also it's gorgeous

View Kierstyn's activity
View user's profile page
Conrad Hunziker
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarJune 23, 2020
Hiking

Some overgrowth and a couple of landslides, but great trail otherwise. Second time I’ve done this part, and it’s much better when there’s water along the route.

View Conrad's activity
View user's profile page
Jessee Powell
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarDecember 5, 2019
Hiking

Awesomeness great running trail with a. Moderate uphill rolling hills beautiful scenery I absolutely loved it. Will be back this is my new got to run!

View user's profile page
'Nick Traver
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarAugust 31, 2019
HikingRocky

The trail was very rocky past 3 miles in.

View 'Nick's activity
View user's profile page
Frank Aguayo Triana
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarMay 17, 2019
Mountain biking

You should bring a helmet when going down the single track it was the most rewarding thing after having pedaled up the mountain; it is very technical With sharp turns but definitely very fun if your an adrenaline junkie loves bikes and heights. Awesome trail loved it. Conquered.

View user's profile page
Fernando Vasquez
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarJanuary 28, 2019

Amazing hi like my kids

View user's profile page
Anouck Bertin
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarJanuary 12, 2019

Great trail with lots of wildlife. Have spotted bobcat and coyote and high variety of birds. It’s dog friendly!

View user's profile page
Samantha Christensen
Yellow StarYellow StarGray StarGray StarGray StarGray StarGray StarGray StarGray StarGray StarDecember 30, 2018

Mostly paved, by an unattractive road. Does have an open view that is pretty at sunset, but not great if you want a quick hike in the wilderness. Fine for a leisurely walk though.

View user's profile page
Mary Posatko
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarOctober 28, 2018
Running

my happy place

View user's profile page
Jaimeluis Organic
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarApril 29, 2018
Hiking

So far is one of my favorite hiking trails around LA, great views, nice walk, birds, people,dogs, little lizards, squirrels, picnics areas, camping places so good, and the arroyo is not dry at all

View user's profile page
W B
Yellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarGray StarGray StarJanuary 22, 2018

01.22.18 We did ~12 miles total of the Arroyo Seco. It was a little boring scenery-wise but our hiking group was fun. Started at the first parking lot and hiked a rocky dirt road to another parking lot. We continued through that lot onto a trail with very small stream crossings. This 2nd trail had old grandmas walking with canes and a guy wearing a crispy white hat with nary a dirt speckle on it. I would rank this part of the trail as very easy. We turned around at a sign reading Switzer Falls 1.5 miles.

View user's profile page
Bucky Sexton
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarJanuary 13, 2018
Hiking

This trail needs to be closed to mtn bikes Riders are not staying on the trail causing bad erosion Riders are not yielding right of way to pedestrians or equestrians Save the arroyo Ban the bike

View user's profile page
Noriko Tich
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarOctober 30, 2017

We went there this Sunday morning to hike the shady trails. There were a lot of mountain bikers out. We were warned to beware of the fast moving mountain bikers that race down that shady portion of the trail. Beware - A section of that path is very narrow and having a cyclist and pedestrian there at the same time is trouble. We turned back and headed up another path. Of course that was the sunny side. No big deal though. The views are beautiful and it’s always better to be outdoors enjoying nature.

View user's profile page
Kristin Perez
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarOctober 22, 2017
Hiking

Landed on this trail due to the closures of several Pasadena hikes today. We hiked the first 3.5 Miles, then headed back (which seemed to be a common turnaround for many). The trail actually extends 10 Miles to the Switzer Falls area. The first half mile is less than beautiful due to the proximity of JPL, but after that, you dip into the wilderness for what is a gorgeous, shaded, very EASY hike (more like a walk in the woods) that offers several stream crossings, wooded areas, and looming canyon walls. The air was at least 10 degrees cooler in the canyon, which was very refreshing. There are a few campgrounds along the way. This hike is good for most skill levels, is suitable for dogs, bikes and joggers,. The trail is a mix of single track and walk-and-talk. .

View user's profile page
Adriana Lopez
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarAugust 19, 2017
Hiking

I loved listening to the water stream while we hiked, so relaxing.

View user's profile page
Larry Jensen
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarJuly 7, 2017

nice refreshing stream, clean water and very green terrain

View user's profile page
Daniel Aragon
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarJuly 3, 2017

Easy hike with lots of shade.

View user's profile page
Jay Nicole
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarMarch 6, 2017
Hiking

One of my favorite trails. There is so much to explore here and great for beginners!

View user's profile page
John Smith
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFebruary 16, 2017
Hiking

Amazing hike with great views. Much easier than anticipated.

Showing results 1 - 29 of 183