The Napa River Bay Trail in the Napa Valley is located on lands owned and managed by the City of American Canyon and the State of California. The Napa River Bay Trail provides great views of the wetlands and constructed ponds as well as public access to the Napa River. The Napa River Bay Trail is a segment of the San Francisco Bay Trail. The Bay Trail is a planned recreational corridor that, when complete, will encircle San Francisco and San Pablo Bays with a continuous 500-mile network of bicycling and hiking trails. Here’s a trail map.
The historic Wetlands View Area and Napa River Bay Trail Trailhead is located at corner of Wetlands Edge Road and Eucalyptus Drive. From Napa—Traveling south on Highway 29: Make a right hand turn on Rio Del Mar and an immediate right hand turn on Eucalyptus Drive. Follow Eucalyptus Drive all the way to the Wetlands View Area just past Wetlands Edge Road. From Vallejo –Traveling north on Highway 29: Make a left hand turn on American Canyon Road and travel west to Wetlands Edge Road. Make a right hand turn on Wetlands Edge Road and make a left hand turn on Eucalyptus Drive.
Stay a night or two at one of American Canyon’s affordable Napa Valley hotels for more time to enjoy all the trail has to offer.
Here’s more good reading about local hiking trails. Here’s additional information about the wetlands.