Mary Bowerman Trail Loop

Mount Diablo State Park, California

Elevation Gain365ft
Trailhead Elevation3,709ft
Elevation Min/Max3663/3726ft
Elevation Start/End3709/3709ft

Mary Bowerman Trail Loop

Mary Bowerman Trail Loop is a hiking trail in Contra Costa County, California. It is within Mount Diablo State Park. It is 0.7 miles long and begins at 3,709 feet altitude. Traveling the entire trail is 1.4 miles with a total elevation gain of 365 feet. Near the trailhead there is a picnic site. DIABLO ECC RM 2 1962, MOUNT DIABLO, PLSS IP - Mount Diablo, and another survey point, the Mount Diablo State Park museum, the Mary Bowerman Trail Overlook information, and Mount Diablo (elevation 3,848 feet) can be seen along the trail. There are also a bench, an information office, drinking water, a bench mark, a communication tower, a viewpoint, and restrooms along the trail. This trail connects with the following: Summit Trail.

Mary Bowerman Trail Loop Professional Guides

Detailed Trail Descriptions from Our Guidebooks

Hiking Through History San Francisco Bay Area (Falcon Guides)
Tracy Salcedo-Chourré
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"Encircling the top of the Bay Area’s highest peak, on a clear day views from the Mary BowermanTrail stretch west to the Pacific Ocean and the curve of the earth and east across the CentralValley to the distant peaks of the Sierra Nevada." Read more
Best Easy Day Hikes: San Francisco's East Bay (Falcon Guides)
Tracy Salcedo-Chourre
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"On a clear day, panoramic views from the Mary Bowerman Trail stretch west across the coastal hills to the Pacific Ocean and the curve of the earth, and east across the Central Valley to the distant peaks of the Sierra Nevada. The summit of Mount Diablo is more than 3,800 feet above sea level, and more than a thousand feet higher than its nearest neighbor. So it should come as no surprise that the views from the top—especially on a clear day—are superlative. The Mary Bowerman Trail circumnavigates the summit, offering the same views you’ll find at the observation deck on the peak’s apex with the added benefit of a natural history lesson and a chance to stretch your legs after the long, adventurous drive to the trailhead. Begin the hike in the lower summit parking lot, which is about 0.1 mile downhill from the smaller visitor center parking area." Read more

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Trail Information

Mount Diablo State Park
Nearby City
Mount Diablo State Park
Mount Diablo State Park, 96 Mitchell Canyon Rd., Clayton, CA 94517; (925) 837-2525; Mount Diablo Interpretive Association, PO Box 346, Walnut Creek, CA 94597-0346; (925) 927-7222;
Local Contacts
USGS Clayton; Mount Diablo State Park trail map available at park entrance stations, Summit Visitor Center, and online at
Local Maps

Activity Feed

Dec 2018