Silverado Trail is a pet-friendly scenic drive. If you want to get a feel for Napa Valley from the comfort of your car, take a scenic drive on the Silverado Trail. This 29 mile route has been a passage for travelers since 1852, when it was used as an alternative for the valley’s main road after a flood. Begin your journey in Napa and drive northwest towards Yountville on a section of the trail surrounded by Chardonnay vines on either side and giant mountains reaching high into the sky. Continue to Calistoga, where you can pause to see Old Faithful and enjoy a hike, or just marvel at the views of incredible Mount. St Helena.