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Big Rock Ridge to the Summit

Big Rock Ridge to the Summit

Source: Marin County Parks
Lucas Valley Preserve. Meet at the Big Rock trailhead in San Rafael.
Wednesday, October 2, 2019, 9am – 2pm

Big Rock Ridge to the Summit

This walk is for 18 and up. This walk will take us from Lucas Valley to the 1,895 foot summit of Big Rock Ridge, the second highest peak in the county after Mount Tamalpais. This walk involves a 1,200 ft elevation gain, but it doesn’t involve any particularly steep sections as it climbs through open grassland, oak woodland, and chaparral. The views along the way are excellent, and the panorama we’ll see from the summit is absolutely breathtaking. The total distance is a bit over 7 miles. Remember to bring binoculars, if you have them.

High fire danger or heavy smoke cancels: Call (415) 893-9527 after 7am on the morning of the event to hear a recorded message if cancelled. We request that no pets (except service animals) attend.

No registration is required.

Questions: Contact Shannon Burke at or (415) 893-9520.

Directions: From Hwy 101 in San Rafael, take the exit for Lucas Valley Rd west approximately 5.5 miles (look for the big rock). Parking is at the crest of the hill, on the south side of Lucas Valley Rd. Turn around at the large driveway just beyond the crest of the hill and double-back to park on the south side of the road.