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Bay Area Ridge Trailhead – Upper Big Rock Trail loop from Marin

Routes

Hiking trails & Routes

United States

California

Marin County

Bay Area Ridge Trailhead – Upper Big Rock Trail loop from Marin

Moderate

4.7

(3444)

13,305

hikers

Bay Area Ridge Trailhead – Upper Big Rock Trail loop from Marin

02:30

8.34km

260m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Last updated: April 24, 2026

Waypoints

Start point

Get Directions

142 m

Bay Area Ridge Trailhead

Highlight • Trail

There is plenty of street parking at this trailhead, with the amazing Big Rock nearby to make it easy to spot. The Bay Area Ridge Trail runs along the ridgelines …

Tip by

207 m

The Big Rock - Skywalker Ranch

Highlight • Natural Monument

As the name implies, a big bolder marks the crest of Lucas Valley Road above Skywalker Ranch, the elusive retreat and production studios of George Lucas and his various film projects.

Tip by

209 m

Big Rock -- Lucas Valley Rd Summit

Highlight • Natural Monument

Be careful on the descent, the pavement can get slippery. This is a great trail access spot for MTB and hiking.

Tip by

2.21 km

Upper Big Rock Trail

Highlight (Segment) • Trail

Big Rock Trail cuts through Lucas Valley Open Space to reach the 2nd highest point in Marin County. From later winter through early summer the hills are verdant green and …

Tip by

5.87 km

Big Rock Trail to ridge summit above Lucas Films Studio

Highlight • Summit

Big Rock Trail cuts through Lucas Valley Open Space to reach the 2nd highest point in Marin County. From later winter through early summer the hills are verdant green and …

Tip by

8.34 km

End point

Way Types & Surfaces

Way Types

8.16 km

123 m

< 100 m

Surfaces

8.16 km

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (450 m)

Lowest point (190 m)

Weather

Today

Saturday 11 July

26°C

8°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Bay Area Ridge Trailhead – Upper Big Rock Trail loop from Marin

Bay Area Ridge Trailhead

The Big Rock - Skywalker Ranch

Big Rock -- Lucas Valley Rd Summit

Upper Big Rock Trail

Big Rock Trail to ridge summit above Lucas Films Studio

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