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Home / Mountain Bike Trails / United States / California / Antioch / Black Diamond Mines

Black Diamond Mines

A mountain biker in a red jacket navigates a rocky trail surrounded by greenery, with an overhanging tree above. The bike is mid-ride on a steep incline, showcasing an adventurous outdoor setting. Black Diamond Mines mountain bike trail.
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Level: Intermediate
Length: 17 mi (27.4 km)
Surface: Fire Road
Configuration: Network
Elevation: +427/ -399 ft
Total: 20 riders
 

Mountain Biking Black Diamond Mines

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#523 of 1,004 mountain bike trails in California
#6,532 in the world

Steep fire road, 17.21 miles if you do every trail. open area with some oak trees. Old mines to check out. Not good in the wet, just gooopy. Good for one gearif you don't mind jogging some.

First added by Juan_Gear on Jun 21, 2005. Last updated May 1, 2020. → add an update
Before you go
  • Drinking water: unknown
  • Lift service: unknown
  • Night riding: unknown
  • Pump track: unknown
  • Restrooms: unknown
  • Fat bike grooming: unknown
  • E-bikes allowed: unknown
  • Fee required: unknown
This trail information is user-generated. Help improve this information by suggesting a correction.
Getting there
Route to Trailhead with Google Maps
Off of Somersville road in Antioch


Black Diamond Mines Trail map

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Local Info

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Trail conditions

Good (Dec 29, 2018)
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More trail photos


A parking lot with several parked vehicles, including a red SUV and white cars, surrounded by trees and rolling hills under a clear blue sky. Black Diamond Mines mountain bike trail.
A winding dirt road surrounded by dry grass and rolling hills, with a distant mountain visible in the background. A bike is leaning against the grass on the left side of the image. The scene is bathed in soft light, suggesting either early morning or late afternoon. Black Diamond Mines mountain bike trail.
A mountain bike resting on a dirt trail surrounded by tall, dry grass, with rolling hills in the background under a clear sky. The scene conveys a peaceful outdoor setting, ideal for cycling enthusiasts. Black Diamond Mines mountain bike trail.
A mountain bike parked on a dirt path overlooking a scenic landscape of rolling golden hills and green trees, with a mountain in the background under a clear blue sky. Black Diamond Mines mountain bike trail.
A person in a gray shirt and yellow shorts stands next to a mountain bike on a dirt path, overlooking a vast landscape of rolling hills and trees under a clear blue sky. A mountain can be seen in the background. Black Diamond Mines mountain bike trail.
A panoramic view of rolling hills covered in golden grass, dotted with green trees. The landscape stretches under a clear blue sky, displaying a blend of greenery and dry terrain in the foreground, with distant hills visible on the horizon. Black Diamond Mines mountain bike trail.
A shadow of a person stands on a dirt path beside a dry, rolling hillside with sparse vegetation. The landscape features golden-brown grass and a few green trees, under a clear blue sky. A winding trail is visible leading up the hillside. Black Diamond Mines mountain bike trail.
A yellow bicycle is parked next to a wooden post at the beginning of a dirt trail. The trail leads up a grassy hillside with scattered trees, and there are informational signs visible in the background. The scene is set in a sunny environment with a clear blue sky. Black Diamond Mines mountain bike trail.
A dirt road leading into a natural area, bordered by dry grass and hills. On the left, there is a small wooden building and a picnic table nearby. In the center, an arched stone structure stands, and a wooden gate is closed at the entrance. Signs indicate park rules, and a person can be seen walking along the road in the distance under a clear blue sky. Black Diamond Mines mountain bike trail.
A mountain biker in red gear riding up a rocky, uneven trail surrounded by trees and greenery. Black Diamond Mines mountain bike trail.


Mountain Bike Trails Near Antioch, California

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Reviews

  • Adam Van Winkle
    ****

    HOT, dry, bumpy, miserable and close to my heart. I grew up here, and I still take my kids hiking here. Tried to take them riding here but it was much too difficult for them. I now Ride the entry road for training as often as I can since I live near by. The stuartville trail is a real a$$ kicker.

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  • Twiddles
    **

    Went by here on the way home. Nothing but fire road and posted no bikes on single track. In fact no bikes on roads smaller than 8 feet shoulder to shoulder. Don't bother. BTW Lime Ridge is same, videos of riders there are on illegal trails. Lime Ridge is close by.

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  • Adventure girl
    *

    Really can't think of a reason to ride this place unless you live close by and don't want to drive. Steep, boring fire roads and it bakes in the sumer...nuff said.

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  • RobertReed
    *

    Rode this trail this wkend. I'd HAVE to say, S***ED. Nothing but fire trails that are endlessly uphill, then down into canyons. Everywhere you turned to look, the signs said NO BIKES. WWon't go there again.

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  • awinter
    **

    If you attempt this trail, bring plenty of water. Once you drop down into the canyon, you have no wind and hight temps. Its stifling and you will sweat a lot.* Review edited 8/19/2010

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  • raleighman91
    **

    not a fan i agree avoid with it being wet did it last year super sandy in early 06 dont want to know what its like this year with the drought colorado is nicer haha

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  • Juan_Gear
    **

    Forgot to say you can link with Mount Diablo if you are hard core. thats what the skiney mutants tell me

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