01:42
6.04km
140m
Hiking
Hike the easy 3.8-mile Oat Hill Mine Trail in Robert Louis Stevenson State Park, enjoying Napa Valley views and historic wagon ruts.
Last updated: February 26, 2026
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Parking
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6.01 km
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6.04 km
End point
Way Types & Surfaces
Way Types
5.95 km
< 100 m
Surfaces
5.98 km
< 100 m
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Thursday 16 July
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This route was planned by komoot.
The primary trailhead is located near Calistoga, off Silverado Trail. There is parking available at this access point. For those planning a one-way shuttle hike, arrangements would need to be made for transport between the Calistoga trailhead and the Pope Valley end of the trail.
Yes, dogs are permitted on the trail. However, they must be kept under voice control at all times.
Spring is an excellent time to visit, as you can enjoy exceptional wildflowers and generally milder temperatures. Fall also offers pleasant hiking conditions. Be prepared for hot conditions in summer and potential seasonal closures in northern sections during wildfire season or hunting season.
The Oat Hill Mine Trail is located within Robert Louis Stevenson State Park. Generally, there are no entrance fees for day use at this park, and permits are not typically required for hiking the trail itself. Always check the latest regulations before your visit.
The trail is known for being very rough and rocky, especially in the middle and upper sections, where you'll encounter chunky volcanic bedrock. While it started as an access road, some parts have become singletrack due to erosion. You can still see ruts from its past as a mercury mine transportation route. The lower sections are generally more accessible.
This trail is generally considered challenging, often rated as 'Hard' or 'Black Diamond' due to its technical difficulty and significant elevation gain. It features an elevation change of 1500 feet (457 meters) over its 8.3-mile length. The upper parts are steeper and rockier, requiring careful footing, making it a considerable workout.
The trail follows an old stagecoach route, and you can still see remnants like visible wagon ruts and hand-laid stone walls. Midway, you'll find the site of Karl Gustov Holm's 19th-century homestead, known as Holm's Place, with stone walls and old fruit trees. You'll also be treated to magnificent, sweeping views of the Napa Valley from the lower portions, and striking volcanic formations as you ascend.
Yes, the route also passes through sections of the Bay Area Ridge Trail - 01 - North Bay and the Palisades Trail. You can find the Trailhead for the Palisades Trail along the route.
No, there is no potable water available directly on the trail. It is crucial to bring plenty of your own water, especially given the trail's challenging nature and potential for hot weather.
Given the rough and rocky conditions, sturdy hiking boots are highly recommended. Bring plenty of water, as there are no water sources on the trail. Sun protection (hat, sunscreen) is also advisable, along with snacks and appropriate layers for changing weather conditions.
Yes, the Oat Hill Mine Trail is a multi-use trail that welcomes mountain bicyclists and equestrians in addition to hikers. Be prepared to share the trail and yield to other users.
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