Lucas Valley Road Ride Marin County Northern California Another great road up in North Marin County is Lucas Valley Road. Just take 101N and just before you hit Novato, take the Lucas Valley Road exit. Take this road west for about 30 miles of great twisties all the way to Point Reys. A great loop to do is take Lucas Valley Road till it ends, then go south on Point Reys / Petaluma Blvd. Then go back east towards 101 on Sir Francis Drake Blvd. It is a great ride!