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.

Beautiful views. Lightly traveled trail by hikers and runners. We rode horseback the Miwok Trail first, then the Hardy Canyon. Would suggest the reverse, Hardy first to Miwok. Do the canyon early when the sun is low and then Miwok should be in the shade on the way down. On horseback the Hardy has many sandstone outcrops, they aren't slippery, but very challenging if you are going down them, up would be better. This is not a beginner trail for horses.

Went today for the first time. It's wasn't so packed as we thought it was. Not alot of bikers or runner, some people here and there. great hike for those who hasn't hike for the longest. It is a great warm up.

It's been almost 10 year but it was one of my old winter hiking areas halfway to the gf's house.

hiking
2 months ago

Nice trail... You have to go through a gate at the back of Round Valley. I came across an old homestead back there as well.

Great winter hike I've done many times. Hardly anyone there. My gf and I once followed a kit fox on the trail for a 1/2 mile while he constantly looked over his shoulder at us. Pretty funny...

hiking
2 months ago

Dry and hot... Best done as a winter trail.

hiking
2 months ago

Great hike, look forward to going again.

best done in spring when the creeks are flowing freely

I love this trail! Would be a five star except it has a lot of people on it. Lots of trail runners that come right up on from behind you without any warning. Lots of fitness types on the trail. I expected it would be crowded because it is free to park and nearby Brentwood. Wouldn't mind the people so much, but there were some really loud talkers!

The trail is nice and wide in most spots. I saw lots of turkeys both Toms roosting, and hens with the babies. They should rename it to Turkey Hill as there are a lot of them here! Very beautiful scenery to soak up.

Take water with you - there is some shade, but not in a lot of places.. Hold your nose in the toilet. I like the trail and will be back in the winter when the hills are green again.

I went counterclockwise so the ascent was really that abrupt than the clockwise path. It was my first time but I'll do it again someday.

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
5 months 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

7 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
Wednesday, July 12, 2017

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
Thursday, June 08, 2017

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.

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