Napa & Sonoma are generally safe destinations for solo female travelers. The regions are famous for their wineries and scenic beauty and are typically crowded with tourists, reducing crime rate. However, like any location, it is always wise to stay alert, especially while alone at night. The risk of encountering dangerous wildlife, while small, does exist in remote areas. Be sure to take standard precautions such as keeping your belongings secure, knowing your route, and informing someone trusted about your whereabouts.