Sydney Flat to Box Canyon is a 10 mile moderately trafficked loop trail located near Antioch, California that offers scenic views and is rated as difficult. The trail is primarily used for hiking and running and is accessible year-round. Dogs are also able to use this trail.

Length10.0 miElevation gain2,483 ftRoute typeLoop
HikingRunningDog friendlyViewsNo shadeFee
Waypoints (0)
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Reviews (35)
Photos (730)
Activities (38)
Completed (62)
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caleb longacre
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Running
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Cathleen Riccobono
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Hiking

nice hike for a cool or cloudy day. We went clockwise, started at the lower lot with an incline but then it was pretty comfortable till towards the end when you have another solid climb.

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Edwin Parilla
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Hiking

Very nice

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christopher golian
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Hiking
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christopher golian
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Hiking
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Gabe & Crystal Sumner
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Hiking

I did this in late July and it was hot, dry, and brown. A lot of this hike feels like forest roads, rather than trails. And there are lots of climbs. I'm not a big fan of climbing on forest roads and it felt like a slog. In spring, when it's green and not as hot, it might be worthwhile checking out.

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Izzy Marie Donahue
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Hiking

First of all, you have to pay $5 to get into the park, but they only take cash or check so I had to go into town to an atm and they don’t take bills larger than $20. So that was annoying. The trail itself is supposed to be scenic, but it really isn’t. I went 1.5 miles in and decided to turn around because it was so miserable. It’s dry and dusty and exposed the whole way. I don’t think I’ll come back. Also I didn’t see a single other person there the whole time.

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Ernie Rude
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Hiking

Heck of a hike, long but lots of scenery and mostly private. Prepare for some steep and long inclines!

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Mike Siders
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Hiking
First to Review

This was a really nice trail. It's pretty strenuous though I wouldn't consider it super hard. There's a lot of ups and downs on it though and right away you're on a steep incline before it levels out on the top before dropping down a couple more times. It takes you through some different landscapes which is nice and it's a combination of wide trails and single track. Expect a lot of cows to be around but they didn't bother us much. Also saw a coyote and heard several others howling off in the distance. We didn't see many people and it was a beautiful day. This is a nice hike overall and would definitely recommend. I would not go if it's muddy though, the trails would be rough to hike through.

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Michael Anderson
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Hiking
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Niko Kingi
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Hiking
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Rob Seitelman
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OHV/Off-road driving
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Lauren Belfer
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Hiking
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Kyle Marchant
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Hiking
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Henry Leong
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Hiking
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Pamela Richard
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Hiking
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Alberto Cuevas
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Hiking
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Jessi P
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Hiking
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David Eriksson
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Hiking
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Cecelia Wolfram
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Hiking
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Cecelia Wolfram
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Hiking
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Cecelia Wolfram
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Hiking
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christopher golian
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Hiking
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Mandy Griswold
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Hiking
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Cecelia Wolfram
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Hiking
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Cecelia Wolfram
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Hiking
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Cecelia Wolfram
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Hiking
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Felicia Grace
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Hiking
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John-David Whelihan
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Hiking
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Danny DeMarco
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Hiking
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