Miner's Trail is a 4.6 mile heavily trafficked loop trail located near Clayton, California that features beautiful wild flowers 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.

Length4.6 miElevation gain1,223 ftRoute typeLoop
Kid friendlyHikingHorseback ridingMountain bikingWalkingBird watchingCaveDog friendlyViewsWildflowersWildlifeHistoric siteFee
Description
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Getting There

When the parking lot is closed, the lower parking lot at Sydney Flat is open but you will have to walk extra mileage to the trailhead from there. There are fees for parking and for bringing pet dogs. This route is a nice introduction to the Black Diamond Mines Regional Preserve. It is a 5,717 acre preserve with coal mines, a historic cemetery, approximately 50 trails, and Bay Views. Take the Canyon trail to connect to the Black Diamond Trail Temperatures in the summer can be extreme so make sure to bring water and sunscreen. Dogs are allowed on leash in developed areas/under voice command in undeveloped areas of the park

East Bay Regional Park District (510) 635-0135

Take Highway 4 to the Somersville Road exit in Antioch. Drive south on Somersville Road to the Preserve entrance. $4.00 parking fee. Maps available for approximately 50 trails within the 5,717 acre preserve. Bring plenty of water. Summer can be very hot for hiking.

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Reviews (159)
Photos (711)
Activities (141)
Completed (544)
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Sam Reynoso
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7 miles into this trail, leads to private property with no possible entry. Had to detour, see my photos. Also, this should be rated HARD as there’s lots of steep inclines and lots of loose rocks. Not ideal for running.

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Jayna Jones
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Pretty hard hike. Not a lot of people around on a Saturday. Started at 2, ended at 4:15

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Steven Turov
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Hiking

Landscape was very dry and mostly devoid of flowers compared to other areas this time of year, but still pretty, and with some history

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Caren Briggs
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Hiking

The trail was fine but a lot of it is exposed and in the direct sun. I recommend shorts and a lightweight shirt plus a hat and sunblock

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Eric Walker
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Hiking

Lots of elevation and open fire road. Great views.

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Jonah Pelter
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Hiking

Black diamond mines is a fantastic park with challenging hikes and amazing views of east bay, the delta and Stockton. The park is huge so definitely set aside a good chunk of time to explore and be ready for some fun and steep terrain. Looking forward to my next trip. It was so amazing today with the clouds

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Carlos Cervantes
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Hiking

Awesome trail. Little shade in large portions of the trail followed by nice shade. Lots of side trails if you want to explore. Fun hike all in all

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Carm M
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Hiking
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Yaowu Xu
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Hiking
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Sylvia Rodriguez
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Hiking
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Jen R
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Hiking

Beautiful !!

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Joe Horvath
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Hiking

Great trail. Wonderful views. There are so many different trails in this area. You can visit many times and never walk the same one.

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Anna Lin
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Hiking

Good for dog

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Tyler Chuck
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Hiking

Really pretty trail that takes you past the site of an old mine. There are basically no remnants though. Has some nice up and down as you look into the canyons created by the hills. Great area!

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Rachel L
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Hiking
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Cavett Robert
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HikingGreat!

Here is a Video I Created describing how to get from Contra Loma Parking Lot to Prospect Tunnel (Mine) and a video of what it is like within the Tunnel: https://youtu.be/WEj1aXRt9nc

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David Castro
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HikingNo shadeOff trailRocky

I rated 5 stars because it kicked my ass. In my opinion this one should be rated “Hard” and not “Moderate.” It is a good hike and will work you. The climb down can be steep and rocky. Hard on my ankles. There is little to none cell reception so I couldn’t use my “AllTrails” app. I took a wrong turn some where and paid for it miles. This hike was suppose to be 4.7 miles according to this app, but my wrong turn made it 7 miles and a additional Mountain climd at the end. My Apple Watch has my heart rate at 167 during the last climb. I am larger man so it Worked me , but I completed it. It took me 4 hours to complete. There was a breeze , a nice one. Great views as well .

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Nat T
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HikingNo shadeOff trail

I live close to this park and have made it out here a few times during quarantine. The lower lot is pretty far away from where I think the trails start. My partner and I always take the hillside dirt road rather than walk along the paved road (much flatter), which is a path along the golden rolling hills of the black Diamond mines. I will note that if you take the dirt path, we didn’t really “see” the mines or anything other than the grassy knolls and a nice lookout spot at the top of the hills lol but maybe we were a little lost. But they’re beautiful and allowed me to fulfill my dream of running through the iconic massive grasslands of California! We were sweating! Pittsburg can get so hot and there’s little shade for a while as you’re climbing these hills. Some trails are full of horse poop. We were very close to cows too! People aren’t wearing masks here typically when I went.

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JOE TIBBETTS
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HikingRockyScramble

This hike was done early March and its beautiful out here. Green grass Covington the hills and scattered wild flowers here and there. The dirt has already dried out and cracked so I got my poles caught a handful of times. I hiked the loop Clockwise and there are some good hills on this trail. the final hill on the way back was a deep mule trail for lack of a better name. great views this time of the year.

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AllTrails User
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HikingNo shade
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marie phelps
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HikingNo shade

Well, for some reason I found the Corcoran segment of this trail HARD. Maybe the heat. It was 100 this morning, or just a rough day but overall a great hike - loved walking down Miner’s trail into the broad valley and many bird sitings in the morning - my favorite being the unexpected great blue herons near one of the ponds! I do recommend this hike for the FIT - I thought I was until that strait up stretch of trail

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Meghan Murphy
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HikingNo shade

Too hot and no shade. Loved the views tho, and seeing coyotes, birds.

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Maxim Razin
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HikingNo shade

Relatively hard for hiking with kids (6 and 4), but they did it! The miner trail ascend is strenuous. A few scary moments hiking along the cow herd.

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Nick Tepeli
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HikingNo shadeRocky

Fun hike with a little bit of everything. Cows on trail. Prospect tunnel is a fun detour.

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Diana Montieth
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HikingNo shade

I love this hike! Bring plenty of water and sunblock!

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