Alston Park is 157 acres of green space, and is a favorite with local families and dog owners. The most common trail is the large loop around the perimeter of the park, with several cut-through routes available. The park's grasslands are pretty in spring when the wildflowers are in bloom. Rolling hills make this is an enjoyable park, with sweeping views of Napa Valley. On a summer day, there is little to no shade.

Leashed dogs are welcome and there is a dog park, called Canine Commons, in the southeast corner (on Dry Creek Road).

This park, operated by the Napa Open Space District, is a favorite with locals. Discover more than 10 miles of hiking trails through shaded redwood forests and creekside trails that wind through ferns. Take a leisurely hike up the canyon to see volcanic ash cliffs, or take a walk over to the historic Bale Grist Mill – a historic, 36-foot water-wheel-powered mill dating from 1846 – a short distance from the visitor center.

Enjoy spacious day use areas for picnics and family outings, or stay in overnight accommodations that include private cabins, yurts, and campsites for tent and RV camping.

Bicycles and horses are allowed on some trails. Dogs are allowed in campgrounds, day use areas and roadways on a leash but not on the trail system.

Las Posadas is great for bikers and hikers. Many trails in this forest to explore for hiking, including fire roads and trails that crisscross each other. This trail system is also perfect for mountain bikers, with a shady single track through manzanita tunnels, while moderate climbs around the park offer more technical terrain and other obstacles as well.

The north side of Las Posadas State Forest runs adjacent to Pacific Union College (PUC) Forest, so you can combine trails.

Moore Creek Park encompasses 673 acres of canyon open space with perennial Moore Creek and 900 acres of oak woodland on the northeastern side of Lake Hennessey. This park offers several trail options, ranging from 700 to 1,600 feet in elevation. Hikers, mountain bikers, equestrians, and nature lovers will find trails through the grassy hillsides of eastern Napa Valley, following the Moore Creek Canyon and along the Lake Hennessey shore.

The trails showcase the oak, douglas fir, and madrone woodlands, grasslands, chaparral, and the park is home to wildlife including black bears, mountain lions, bobcats, gray foxes, and coyotes. Bald Eagles have been spotted at Lake Hennessey along with golden eagles, hawks, osprey, great blue heron, white egrets, woodpeckers, and loons.

The Vine Trail is paved and flat, and is perfect for walking, running, biking, dogs on a leash, kids, and strollers. This is a favorite walking and biking trail for locals and visitors alike. One of our favorite ways to see wine country is on a bicycle, experiencing Napa Valley’s beautiful terrain in the fresh air and at human speed. Biking in the valley is easier than ever before!

Eventually, the full Vine Trail route will run continuously from Calistoga to American Canyon. Currently, the Vine Trail is a 12.5-mile long trail that runs from South Napa to Yountville in the valley center. There are benches and water stations along the way, with parking available in multiple locations.

The Newell Open Space Preserve is a 642 acre park set among the hills behind American Canyon. There is currently only one major trail in the park, but since the area is mostly unknown outside of American Canyon locals, it is very likely that you will find yourself alone. On this trail you can expect rough, rocky, and uneven ground, as well as lush farmland, an old barn, views of the surrounding canyons, and plenty of cows. The Newell Open Space Preserve is a largely untouched open space, preserved from development since the late 1990’s, so be aware that this is tick, coyote, mountain lion, and potentially rattlesnake country.

PUC Forest has 35 miles of recreational trails for hiking, mountain biking, horseback riding, and dogs on a leash. You'll find dozens of trails within this park that crisscross and loop, which you can combine to create your own hiking experience. Some popular hikes are listed below.

For years, the trails of PUC’s forested lands have been known mostly by word of mouth – even locals are often unaware. Home to a nesting pair of Northern Spotted Owls, the rare Napa False Indigo, and some of the easternmost Coastal Redwood trees, the rich biodiversity of the PUC forest makes is especially valuable to conservationists and researchers.

The south side of PUC Forest runs adjacent to Las Posadas State Forest, so you can combine trails.

Robert Louis Stevenson State Park is 5,200 acres and contains stunning views of Napa, Sonoma, and Lake Counties from the summit of the highest peak in Napa County, Mount St. Helena. On clear days, the Pacific Ocean, the Sierra Nevada mountains, Mount Shasta and Mount Lassen are also visible, and in the wintertime this is one of the few hikes that can be enjoyed with snow. 

The trails to the north climb to the summit of Mount St. Helena, while the trail to the south lead hikers to Table Rock, the volcanic cliffs of the Palisades, and a connection to the Oat Hill Mine Trail and the outskirts of the City of Calistoga. This large park has a variety of environments and the two sides are very different in views and experience.

If you’re wondering why there’s a park in California named for the famed Scottish writer, this mountain is the spot where Stevenson, author of Treasure Island and Kidnapped, spent his honeymoon in 1880 with his wife, Fanny Osbourne. The rustic cabin where they stayed no longer exists, but there’s a marker on the trail to the summit. Winding through evergreen forests and chaparral, the upward, five-mile trail takes you to the top of Mt. St. Helena where, on a clear day, you can see all the way to San Francisco Bay.

Located in the southeastern foothills of Napa Valley, this hilly greenspace offers 850 acres with 25 miles of trails for hiking and biking – ranging from moderate to challenging. The highest point in the park is at Sugarloaf, which offers gorgeous views of the valley and the San Francisco Bay. You'll also find a lovely lake, Lake Marie, along with plenty of wildflowers, deer, turkey, lizards, and more wildlife.

Skyline also offers picnic and barbecue areas, an RV park, and tent camping, plus a disc golf course and an archery range. Dogs are not allowed on any of the hiking trails.

Westwood Hills Park is only 5 minutes from Downtown Napa, and is a great city park for hiking, trail running, and dog walking. You'll find a few trail options, and while the trails are steep, they're shaded most of the way. Follow the Summit Trail uphill through the middle of the park until it reaches a significant split with one path going down to the right and another up to the left. To get to the Summit Vista Viewpoint, you will want to stay left. Or if you want to explore more, there are several trails that split off the main trail, and a few that run the perimeter of the park.

The wetlands are a great place for bird watching and enjoying the sunrise or sunset, and are heavily used by locals for family outings, walks, and bike rides. The trails in this park are a part of the Napa River and Bay Trail as well as the San Francisco Bay Trail, two regional trail systems that connect our communities. The waters, wetlands, and uplands you see along the trail are part of an interconnected watershed system that drains into the San Francisco Bay, which provide habitat for waterfowl, shorebirds, fish and wildlife species.