Coal Mine Ridge Trail is a hiking trail in Portola Valley, California. It is within Coal Mine Ridge Park. It is 0.8 miles long and begins at 948 feet altitude. Traveling the entire trail is 1.6 miles with a total elevation gain of 454 feet. Near the end of the trail is a bench.
Coal Mine Ridge Trail Professional Reviews and Guides
"On first glance at the town of Portola Valley on the San Mateo peninsula south of San Francisco, you’d never guess at the fantastic system of trails tucked away and woven through the hills southwest of the city."
--Jason Fator, Best Hikes With Dogs: San Francisco Bay Area and Beyond (The Mountaineers Books).
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