Explore the most popular birding trails in Round Valley Regional Preserve with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

Nice hike with lots of intermittent shade for a reprieve from the sun. Lots of gradual up and down as opposed to straight up. Pretty views. Great hike for a beginner like me.

great for some easy mountain biking

Coolest and quietest place...just perfect

Beautiful views, definitely good to bring lots of water and trekking poles for the hike back up the mountain. Another good thing to know is that this trail is highly trafficked. Be prepared for people running at you when there is nowhere to go

numerous changing of path ups n downs

backpacking
1 month ago

Backpacking Day 3 of 3 Mt. Diablo Range. Morgan Backpack Camp (Morgan Territory) to Round Valley Equestrian Center (Marsh Creek).

It's a beautiful hiking trail. With beautiful views..

no dogs on nature trail will always get a low rating for me...its outside people

3 months ago

Nice rolling hills

I love this trail. It's challenging enough but overall not too bad. I've hiked it alone and with friends and my kids. Great views of the surrounding preserve from the midway point at the top. If you do the trail reverse starting on Hardy Canyon it definitely makes it more challenging. Muddy after rain but you can still do it. Enjoy!

Great hike. We started at the trailhead at Round Valley and went 5 miles to the lake and then returned 5 miles for a total of 10 miles. The trail is mostly flat with a hill at the beginning and about 3/4 mile before the lake. There is very little to no shade. The temperature was in the 50’s today with a slight breeze. Perfect for the hike today. Got to see lots of wildlife - wild turkeys and coyotes - as well as cows and several people riding horses.

Hiked this trail yesterday afternoon. Was very nice, only crossed path with one other person the entire hike. Will come back again.

Great hike for cooler weather. Avoid going on hot summer days. Little shade and will be hot.

Not too crowded on Sunday. Very dry in October, half shade. Miwok trail is wide and pretty flat, the Hardy Canyon Trail is narrower and gets you up to the peak of the hill with good views, and around back to the beginning for a loop. Free. About 3 hours with young kids.

Beautiful scenery! I went around clockwise up the Hardy Canyon Trail and back down via the Miwok Trail and that is how I would do it again if I ever went back. I'm from SoCal but I was in Brentwood on business and decided to go on a hike before getting in the car and driving 6 hours home. The Miwok Loop was perfect.

hiking
10 months ago

I did this one at the end of June. From the trail head to the actual lake and back is 10.4 miles with some decent hill climbs spread through out. Going through The Round Valley part is pretty good. Once you get into Los Vaqueros the trail is big dirt fire road, not a hiking trail and the view can be "meh" sometimes and on hot days there is no shade on the trail at all. An enjoyable longer hike though.

hiking
11 months ago

This is a fantastic trail in which you walk through open grasslands and oak woods and you are always surrounded by the forest covered hills. You can also access the park's group camping area on this trail as well as the out and back Fox Tail Trail. The majority of the elevation is right at the start and then (because it is a loop) right at the end. Plenty of Brush Rabbits and other wildlife to spot. Also some turn of the century farming equipment here and there since this was once a working ranch/farm.

I had an absolutely great time this morning hiking this trail. Enough elevation change to make it challenging yet not over whelming. Great views and a nice variety of terrain from oak woodland to grassy hills. Wonderful hike.

Enjoyed this trail today. A good sized hill, doable but still a little challenging.

hiking
Sunday, March 26, 2017

This trail is very muddy. There are a few spots that you will definitely have to step in water to get across. The green hills are very pretty to look at. Overall it was good family hike. I would not recommend it for kids under age 10 due to the mud & water.

It's a nice trail to spend some time on. I got over 9 miles on the trails at Round Valley.

walking
Sunday, February 26, 2017

Cool trail! Awesome stream that runs along side for 1/3 the loop. Trail was a bit rough at times due to the recent heavy rain so be careful. Perfect 2-hour walk to start the morning ;)

hiking
Monday, February 13, 2017

Wow really cool trail. There's multiple creeks that run into Marsh Creek and there all flowing! Mid February is the best time to see this park! 5 Stars!

beautiful hike. a little rough right now due to all the rain we've had. still manageable though, just wear shoes that are OK in mud.

hiking
Friday, December 23, 2016

This trail is actually in the park named Round Valley Regional Preserve. However, Round Valley is next door to Los Vaqueros Reservoir, which is spelled incorrectly as well.

Round Valley Regional Preserve address is 19450 Marsh Creek Rd, Brentwood, CA

trail running
Friday, November 18, 2016

Beautiful place to take a hike (walk) enough up hills to get your heart really to beating and then down hill to recoup and then up again. my daughter and I loved it. Will return to do other trails

hiking
Thursday, November 03, 2016

I enjoyed doing this one except it was hot... I had done several hikes in both parks so I decided to do a connector. There is a gate between the 2 in the back of round Valley that I had discovered a year before so something drew me to go through and on to Vaqueros. Only did this one once....

horseback riding
Monday, October 17, 2016

Beautiful place to ride!

hiking
Sunday, October 16, 2016

Nice little hike, can go easy or choose the path with a moderate hill. Since this is almost in my backyard, I like the easy access and options to vary the difficulty.

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