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Black Diamond Mines Regional Preserve
4.7 ★★★★★ 1,437 Google reviews · Running trail in Antioch, California · Posted hours
Runner's snapshot
- Surface
- Mixed
- Distance
- 65 mi
- Shape
- Not reported
- Shade
- Not reported
- Access
- Posted hours
Confirmed from Black Diamond Mines Regional Preserve's own listing, the park or land manager's website, and runner reviews. Blank cells mean we could not verify that fact — we would rather say "not reported" than invent one. There is no Easy / Moderate / Hard rating on this page on purpose: a one-word difficulty score tells you nothing about whether a trail suits your run. Surface, distance, shade and hours do.
Former coal mining site featuring expansive green space, underground tours & hiking trails.
What runners say about Black Diamond Mines Regional Preserve
“Definitely dry and hot in the summer but beautiful scenery and a good spot for walking the dog.”
“now I know where to go but for your first time, it can seem like you're off track of its not clearly marked”
I love coming out here. Some great hiking. The cave tour is a lot of fun. Very interesting. The pictures are from a recent hike. It was a little muddy and foggy. There’s some horse/ biking trails too. And a place for horse trailer parking.
Decently marked and maintained trails. Ample parking with multiple lots. Views are pretty good, stretching from the delta to the north and Mt. Diablo to the southwest. Nice rolling hills with sporadic foliage. Some parts shaded but mostly exposed. Great for spring/winter hikes, during which you may catch flower blooms.
We took the tour as a group and hiked afterwards. Our guide was absolutely amazing and personable. They were very informative but made it interactive and engaging for everyone.
What a great hiking area, many trail options to choose from for all skill levels. Great views. $5.00 dollars to park, $6.00 dollars to go over the Antioch Bridge. Lots of history, the miners tunnels are cool to see. Recommend a hat, sunscreen and water.
Trail conditions & character
“Definitely dry and hot in the summer but beautiful scenery and a good spot for walking the dog.”
“When you gain elevation, the blue Sacramento River Delta blends into the Skyline.”
“Definitely dry and hot in the summer but beautiful scenery and a good spot for walking the dog.”
“We started from the first long trail going up from the road/ parking lot so we were thrown off where it ended when we got to the other side/end.”
“There are occasional rocky outcroppings and some dense stands of manznita and isolated native drought tolerant vegetation.”
Plan your run at Black Diamond Mines Regional Preserve
The practical stuff
- AccessPosted hours — posted hours below; park gates sometimes close earlier than the listing says
- SurfaceMixed — more than one surface along the route, so check the segment you plan to run
- Distance65 mi as reported — check whether that is one way or a round trip before you commit. Long enough for a real long run.
- ShadeNot reported. Assume some of it is exposed and carry water in summer.
- At the trailheadparking, restrooms, water — reported by runners
- DogsWelcome, per reviewers. Leash rules vary by park — the trailhead sign is the authority.
- Stroller / wheelchairReported as smooth and step-free enough for a running stroller or a chair.
- Websiteebparks.org
- Phone+1 510-544-2750
- Social Instagram · Facebook
Hours
| Monday | 8 am–8 pm |
| Tuesday | 8 am–8 pm |
| Wednesday | 8 am–8 pm |
| Thursday | 8 am–8 pm |
| Friday | 8 am–8 pm |
| Saturday | 8 am–8 pm |
| Sunday | 8 am–8 pm |
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