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Upper Otay Reservoir is a 2.1 mile lightly trafficked loop trail located near Chula Vista, California that features a lake. The trail is rated as moderate and offers a number of activity options. Dogs are also able to use this trail.

2.1 miles
157 feet

dog friendly

kid friendly



mountain biking

trail running




7 days ago

no clear path. hard to find a cross way to climb the small mountain. not fun at all.

mountain biking
off trail
28 days ago

no shade
1 month ago

4 months ago

The trail head said prohibited entry?

9 months ago

Out of all the hikes I’ve been in up and down California this one has got to be one of the most let downs. Honestly this was a walk around what’s left of the Otay River, which is now just trash, (lots of peoples “used” drugs/alcohol) it has an odd energy and it was just sad seeing how people can just ruin nature and its beauty. Definitely wouldn’t bring my kids here.

mountain biking
9 months ago

This is a great segment to add to the surrounding trails. Riding the loop counter-clockwise gives you an opportunity to take on a rocky climb and to practice some harder lines. Taking it clock-wise has a great flow where you can fly through rocky sections.

9 months ago

good hike. but not much to see.

This place is amazing for intermediate mountain bike riding. There are a lot of trails that lead to the same destination. The beginning of the trail starts of with a lot of big bushes and lead to the long trees and branches near the lake. There will be a lot of unexpected turns and you can get little scratches so make sure to wear long pants. There are so many hills and turns and you can really enjoy the ride. Once you get deeper into the trail it’s almost like a desert, lots of open grainy terrain, and small bushes. If you go around summer, the sun will be on you so hard, so make sure to wear sunscreen and bring lots of water. Be careful for snakes and bugs!!! But overall this trail is amazing and the end result rewarding. I always feel the ride back to the parking area is a shorter ride than the way in!!! My husband and I love it so much, it’s become one of our favorite trails.

trail running
11 months ago

Trail gets a bit dicey to follow on the north side of the lake, had to double back. Ran it on a rainy day too, the north side is pretty muddy. I also ran it in Merrill barefoot trail running shoes, would not recommend because of how rocky the back half of the trail is. Walked a few sections just because I was getting jabbed by rocks with every stride.

No judgments from me, but there were a few kids hanging out on the graffiti wall in the no trespass area. Hey I was in highschool once, but still I wouldn't leave anything valuable in your car.

Monday, February 26, 2018

I liked it but it was kind of sketchy was checking it out for my baby and I to hike but I definitely wouldn’t go alone or even with one friend if you are a female there were people waiting in the parking lot watching cars which I know they were because they had flip flops on but if you are in a group it’s relaxing

Sunday, February 25, 2018

The hike is moderate however we didn’t finish due to no people being around except for the three man standing by the hill, very suspicious. We ended up turning around then came across the broken glass.... that means cars get broken into , watch out. Unless you’re going with more than 3 people I wouldn’t recommend it. Reminds me of an episode of CSI.

Tuesday, September 19, 2017

I've been this trail once before, a year ago. It was a decent area, not bad with the pretty reservoir. However this time out, I was horrified to find glass littered everywhere. From the parking lot all the way down and out a mile or so. Very unkept, do not bring your dog unless they are wearing shoes!

Sunday, September 17, 2017

Upon arriving I saw glass from a car window littered all over the parking area (don't leave valuables in your car) The trail is definitely lightly trafficked and not well marked. The reservoir is beautiful. I am disappointed in the amount of glass littered on trail down to the water. Lots of broken beer bottles. Wouldn't really say it's kid friendly, maybe kids over 10. Wasn't a bad hike but definitely won't be returning.

mountain biking
Thursday, July 06, 2017

Monday, April 17, 2017

Not impressed at all. The drive in was easy and parking was decent. We went on Easter so it was packed, but on any other day parking should be fine. I read it was a 2 mile or so hike around the lake. My husband and I brought our bikes to make it easier in our kids (10,8,7,6) The trail signs were awful IF they were even present. Only certain sections were paces and the rest were weird dirt trails many of which said no trespassing. The dam was cool, but if you like hiking or biking around lakes Miramar Lake is WAY better.

Wednesday, March 22, 2017

I went on a Tuesday at 345 took me till 5.
Unclear entrance.
"Path" was extremely unclear!
Unpaved road for the first half of the hike.
Beautiful scenery
No trash anywhere!
Only saw a few other people
Had my baby and dog with me (no stroller)
Beautiful mansions on the hilltops to look at
The reservoir was filled with water!
The graffiti wall/dam was pretty cool!

All in all the hike was really good. I enjoy looking for the path sometimes.... But if you're not good with that sort of thing, I would choose another hike.

Monday, March 20, 2017

parts of the path are not clearly marked. Otherwise it was a great walk.

Tuesday, February 21, 2017

With the recent rains the trail was really muddy and swampy in some areas. A bridge that crosses over a stream was partially under water. Overall the hike was fun with varied terrain: flat, rocky, dry, lush, etc. Just prepare to get your shoes wet and muddy!

Thursday, February 16, 2017

Not a very nice place.

Monday, February 13, 2017

Great views of surrounding hills and Lower Otay. This trail is easy, more like walking than hiking. Dad, Mom, 12 yr old, 8 yr old handled it without any difficulty. Wait at least 5 days after it rains or bring water proof boots. Had to hop across parts of the trail that were ankle deep due to elevated creek levels. Gave it 3 stars because it wasn't anything breathtaking or difficult, just a nice walk on a nice day.

Friday, February 10, 2017

Nice trail with view of lake. Still developing the plant areas. Pretty clean.

Monday, February 06, 2017

Pretty easy trail to navigate with the all trails map download. We did this with 3 kids and our 2 dogs and no one had any issues completing it. There was a lot of mud along the northwest side of the lake due to some recent storms but it wasn't that bad. This is a good short hike with nice views of the lake.

Wednesday, January 18, 2017

Easy, nice views the second half of the loop

Tuesday, January 10, 2017

Great Trail for the family great Trail for your dog... peaceful sort of tricky to navigate but fun and we made it around the lake...

Thursday, November 24, 2016

Fun and different take on Lake Otay.

Wednesday, October 26, 2016

Nice smooth trail that's not crowded and winds around a small tranquil lake. :-)

Monday, September 05, 2016

Good walking /biking/running trail...easy trail.

Saturday, May 07, 2016

Nice and easy

Friday, April 22, 2016

Did this one with a jogging stroller, but only for the first .90 miles - had to double back at the rickety and broken wooden pallets that served as a bridge and wouldn't accommodate the stroller. Nice views of the lake. Keep an ear out for bikers though, they come flying around the curves and you're expected to dodge out of the way in time.

Sunday, April 17, 2016

Nice and easy for kids too .

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