The birthplace of mountain biking, Marin is a beautiful county to explore on two wheels. Yet it is daunting to the casual cyclist for many scenic rides through Marin involve climbing hugh hills.
This ride is beautiful, remote and (mostly) flat. You can start in the town of Nicasio, leaving your car parked along the town square. A map is included, but here are written directions as well.
1)Head North on Nicasio Valley Road. You'll pass by (and over) the resevoir at several points.
2) At the T go left on the Point Reyes-Petaluma connector. You will pass by a few farms and, maybe, a truck stopped by the road selling fruit. (Best chances for informal produce shopping are in June through October.)
3) You will then take another left onto Sir Francis Drake Rd., which will then dip and curve through the lovely redwoods of Samuel P. Taylor State Park. There is some more traffic on this road than the others, but it's not overwhelming.
4) At the tiny enclave of San Germino turn left back onto Nicasio Valley Road. Or, if it's Saturday morning, you can stop here and wander through their small farmer's market. (There are a few nice ladies who usually sell fresh baked muffins, scones, and banana bread.)
5) After about 3 miles on Nicasio Valley Road you return to your starting point. You might choose to indulge in a nice brunch at the Rancho Nicasio. (I'd recommend the Huevos Rancheros and the oysters.)
Other than the seasonal roadside stands and farmer's markets, there are no real services (convenience stores, bike stores, etc.) outside of a small general store at Nicasio. So bring with you what you need in terms of water, snacks and sunscreen.