Seaborg and Mariposa Loop Trail

MODERATE 2 reviews
#12 of 15 trails in

Seaborg and Mariposa Loop Trail is a 9 mile lightly trafficked loop trail located near Orinda, CA 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.

9.0 miles 2116 feet Loop

dog friendly

kid friendly



mountain biking

nature trips

trail running




wild flowers


20 days ago

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.

1 month ago

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