Bay Area driving guide · Ranch country loop

Lucas Valley and the Nicasio loop

The classic West Marin morning. Lucas Valley gets the attention, but the loop beyond it — Nicasio, the Petaluma road, Chileno Valley — is where most of the distance and most of the quiet is.

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Lucas Valley Road
Nicasio Valley Road
Point Reyes–Petaluma Road
Chileno Valley Road
Marshall–Petaluma Road

Start: Highway 101 at Lucas Valley Road
Finish: Back where you started
Return: Optional loop below

Why this drive

Four connected roads through dairy country with almost nothing on them early in the day. None of them is especially technical; the appeal is stringing them together and the scenery in between. Watch for cattle, farm traffic and blind crests.

The route

Lucas Valley Road west
Leave 101 at Lucas Valley Road and follow it west through the valley toward Nicasio.
Road details & map →
Nicasio Valley Road
Turn north at Nicasio, past the reservoir, toward the Point Reyes–Petaluma junction.
Road details & map →
Point Reyes–Petaluma Road
Head east over the hills toward Petaluma, or west toward the coast if you want to extend the day.
Road details & map →
Chileno Valley Road
The quiet middle of the loop, running northwest through ranch land toward Tomales.
Road details & map →
Marshall–Petaluma Road
Close the loop back toward Petaluma. Surface here has been reported as rough in places.
Road details & map →

Good places to stop

Nicasio
A village, a church and a square. Not much else, which is the appeal.
Point Reyes Station ↗
The obvious food stop if you extend west instead of turning back.

Make it a loop

From Petaluma take Highway 101 south, or repeat the loop in the opposite direction — the roads read differently the other way round.

Weekends & road conditions

Police sometimes patrol Highway 9 and Skyline, including weekends. Local riders have reported enforcement on both roads. Follow posted limits throughout the drive.

Expect other drivers, motorcycles and cyclists around these popular roads and junctions. Before heading out, check Caltrans QuickMap for state-highway conditions and San Mateo County road closures for local roads.