Seaborg and Mariposa Loop Trail

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Briones Regional Park

Seaborg and Mariposa Loop Trail is a 7.2 mile lightly trafficked loop trail located near Orinda, 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 are also able to use this trail.

Distance: 7.2 miles Elevation Gain: 1,512 feet Route Type: Loop

dog friendly

hiking

mountain biking

nature trips

walking

bird watching

running

forest

views

wild flowers

wildlife

hiking
2 months ago

AMAZING views my fav in all of briones. they maraposa loop is a must especially

hiking
bugs
no shade
7 months ago

walking
7 months ago

Really great trail with a healthy combination of hills, shade and views. Gets a little confusing as you need to cross through cattle gates, but really nice.

hiking
8 months ago

Gorgeous and serene trail. Not a lot of views today as we were totally fogged in the whole time. Will definitely do this one again!

hiking
bugs
no shade
8 months ago

Disappointing trail. It’s all dirt and old gravel road, either exposed to sun beating down, or shade swarming with flies, gnats and mosquitoes, probably because of all the cow pies. Fair amount of elevation, but not a big view payoff - just rolling hills. Might be better in fall or spring. If you go, take sunscreen and bug spray.

hiking
11 months ago

Nice trail and terrain but lots of ticks

great hike! lots of rolling hills

Boggy and uneven in a few spots. Mostly well groomed and marked trails. Cloud free views of both Mount Diablo and Mount Tamalpais. Nice panorama of Lafayette with beautiful views of Lafayette and Briones reservoirs. Lots of cows along the way. Only about 40% shaded by trees. Bring sun protection and water.

running
Tue Oct 23 2018

So peaceful. A gorgeous time of year

hiking
Sun Mar 25 2018

Beautiful trail, hilly but a lot of great views!

Mon Mar 20 2017

Trail that we did was actually 9.7 miles but great workout up and down fire trails. Gorgeous and not heavily trafficked. Would be super hot in summer given there's not much shade. Plus we saw a puppy golden retriever at the end....so worth it obviously.

hiking
Sat Nov 19 2016

I took the Seaborg Trail and hiked up to the Crescent Ridge Trail and back. For a total of 3.8 miles I finished in little more than an hour. Got some good workout with some fantastic sunset view on the way.

hiking
Mon Oct 31 2016

Longer loop that is less traveled than most of the trails on the Reliz Valley Rd side. A good cardio and a good place to put some miles on with less people

hiking
3 days ago

hiking
4 days ago

hiking
2 months ago

hiking
2 months ago

mountain biking
2 months ago

3 months ago

hiking
10 months ago

hiking
11 months ago

hiking
11 months ago

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