4
hikers
05:31
21.3km
130m
Hiking
Hike the 13.2-mile Big River Haul Road in Mendocino Headlands State Park, offering scenic views of the estuary, redwoods, and wildlife.
Last updated: February 26, 2026
Waypoints
Start point
Parking
Get Directions
102 m
Highlight • Beach
Tip by
384 m
Highlight • Trail
Tip by
10.6 km
Highlight • Trail
Tip by
21.3 km
End point
Parking
Way Types & Surfaces
Way Types
20.6 km
639 m
Surfaces
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Elevation
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Weather
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Today
Thursday 21 May
21°C
7°C
0 %
Additional weather tips
Max wind speed: 12.0 km/h
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This route was planned by komoot.
Despite some classifications, the Big River Haul Road is generally considered an easy trail for hiking. It is largely flat with minimal elevation gain, following the Big River. The path consists mostly of a dirt and gravel road, making it accessible for various activities.
A full out-and-back hike along the entire 21-kilometer (13-mile) route typically takes around 5 to 6 hours to complete, depending on your pace and how often you stop to enjoy the scenery.
The trail primarily features a dirt and gravel road, much of which is doubletrack. Further inland, some sections transition into singletrack. It's mostly flat and meanders through redwoods and under tree canopies, offering a generally shaded experience.
The route offers picturesque views of the Big River estuary, home to diverse wildlife like sea and shore birds, otters, and seals. You'll also pass through towering redwoods and Douglas firs. Notable points include Big River Beach at the start, the Big River Trailhead, and the Big River Road Junction. Keep an eye out for historic logging remnants like old railroad trestle pilings.
Yes, the trail is very dog-friendly! However, please ensure your dog remains on a leash to protect the local wildlife and ensure a pleasant experience for all trail users.
The primary access point is at the Big River Trailhead, which is located near Big River Beach. There is parking available at this location, making it convenient to start your adventure.
The trail is enjoyable year-round. During appropriate seasons, you can observe wildflowers, ferns, and blackberries. The shade from the tree canopy makes it pleasant even on warmer days, and the estuary views are beautiful in any season.
No, there are no specific permits or entrance fees required to hike the Big River Haul Road trail or to access Mendocino Headlands State Park. It's freely accessible for public enjoyment.
Yes, while the main route is the Big River Road, it also intersects with other paths. You'll find sections that connect to the Pole Line Trail, Ames Lodge Trail, and Dry Dock, offering opportunities to explore further.
Yes, recent initiatives have improved accessibility. There is a new barrier-free entrance, making it easier for individuals using wheelchairs to enjoy sections of the trail, particularly closer to the trailhead.
The Big River estuary is a vibrant habitat. Keep an eye out for a diverse range of sea and shore birds, playful sea otters, and adorable harbor seals in the river. Further inland, you might spot various forest creatures.