5.0
(3)
22
riders
5
rides
Gravel biking in Jackson Demonstration State Forest offers an extensive network of dirt and gravel roads across nearly 50,000 acres in Mendocino County, California. The terrain features diverse landscapes, including towering redwood forests, river drainages, and historic logging roads. Routes vary from smooth dirt paths to rougher forest sections, providing a mix of steady climbs and technical bits. This working forest environment connects to ridge lines, streams, and coastal areas, offering varied riding experiences.
Last updated: July 13, 2026
1
riders
21.8km
01:53
290m
290m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
7
riders
30.2km
02:04
460m
460m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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8
riders
39.5km
02:56
440m
440m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
48.4km
03:56
880m
880m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
3
riders
53.4km
04:04
690m
690m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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This beautiful 720-acre park is home to stunning and majestic towering redwoods. It offers sizeable private group camping facilities with full-service cabins, accommodating up to 200 people. The day-use area features eight miles of hiking and biking trails, along with over 25 miles of routes leading to the adjacent Jackson Demonstration State Forest.
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Mendocino Headlands State Park, spanning 347 acres, is the jewel of Northern California. It features miles of a fantastic network of trails that wind along cliffs, offering picturesque views of the Big River, sandy beaches and rugged coastline. Adjacent to Jackson Demonstration State Forest and Mendocino Woodlands State Park, you'll find endless places to explore and enjoy this spectacular area.
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The Big River is the longest undeveloped estuary in the state, stretching 41.7 miles and nestled amid towering old-growth redwoods. It is a sanctuary for wildlife and a stunning feature of Mendocino Headlands State Park. As you ride through this idyllic landscape, you'll see plenty of waterfowl that inhabit this peaceful setting.
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The Big River Trail is a scenic old haul road closed to motor vehicles that offers an easy ride with minimal elevation gain. Most of the road is double track, although portions have been grown over into singletrack. It is a popular choice for hikers, runners, and families, with picturesque views of the Big River Estuary and surrounding woodlands along the way.
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If you're coming from Big River Beach, take a left to stay on Big River Road, which will eventually lead you to High Chutes Road and Old Haul Road. Alternatively, go right to follow the road along the river, which will take you to a bridge crossing Big River and, eventually, the Big River Lagoon. If you're approaching from High Chutes Road or Old Haul Road, simply go straight to continue your journey to Big River Beach.
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Dramatic vista down along the steep bluffs to the cove with a natural sandy beach.
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Komoot currently features 5 gravel bike routes in Jackson Demonstration State Forest. These routes offer a variety of experiences, from moderate to difficult, catering to different skill levels.
The gravel bike trails in Jackson Demonstration State Forest range from moderate to difficult. You'll encounter diverse terrain, from smoother dirt roads to rougher forest sections, with steady climbs and technical bits. Routes like the Caspar – Caspar Creek Canyon loop and the Agate Beach Cove – Jack Peters Creek bridge loop from Mendocino are rated as difficult, featuring significant elevation gains. Wider tires (around 40-45mm) are recommended for optimal performance on the varied surfaces.
Yes, all the gravel bike routes featured in Jackson Demonstration State Forest are circular loops. This allows for convenient starting and ending points without the need for shuttles. Examples include the Big River – Big River Trail loop and the Jack Peters Creek bridge – Agate Beach Cove loop.
Jackson Demonstration State Forest is rich in natural beauty and unique features. You can ride through towering redwood forests, encounter the distinctive stunted trees of the Pygmy Forest, and explore areas near the Big River. Some trails, like the Hare Creek Trail, follow old logging roads alongside quiet creeks, offering scenic views. You might also find connections to areas like Mendocino Headlands State Park, providing coastal access and views.
The Jackson Demonstration State Forest offers year-round gravel biking opportunities, but conditions vary seasonally. Spring and fall generally provide the most pleasant weather for riding through the redwood forests. Summers are typically dry and warm, while winters can bring rain, making some sections muddy. Always check local weather conditions before heading out.
While many routes in JDSF are rated moderate to difficult, some sections of the extensive network of dirt and gravel roads might be suitable for families with older, experienced riders. The forest features multi-use single tracks and old logging roads that can be less challenging. However, it's important to note that the terrain can be varied, and some sections might require a good level of fitness and bike handling skills. Always review the route details, including distance and elevation, to determine suitability for your family.
Access points for gravel biking in Jackson Demonstration State Forest are typically found near the start of the various routes. For example, the Big River – Big River Trail loop starts from Cal Fire Woodlands Fire Station, and other routes begin near Surfwood Estates or Mendocino. Parking is generally available at these access points, though signage can be minimal in some rustic areas of the forest.
Jackson Demonstration State Forest is a multi-use area. While specific regulations for dogs on bike trails are not explicitly detailed, dogs are generally permitted in the forest, often requiring them to be on a leash. It's always best to check the latest regulations from the California Department of Forestry and Fire Protection (CAL FIRE) or the Jackson Demonstration State Forest directly before your visit to ensure compliance.
The komoot community highly rates the gravel biking experiences in Jackson Demonstration State Forest, with an average score of 5.0 stars. Reviewers often praise the extensive network of gravel roads, the immersive redwood forest environment, and the challenging yet rewarding terrain. Riders appreciate the sense of adventure and the opportunity to explore a vast working forest.
Yes, seasonal camping is available within Jackson Demonstration State Forest itself, offering designated campsites with basic amenities like picnic tables, fire rings, and pit toilets. For more amenities or different types of accommodation, the nearby towns of Fort Bragg and Mendocino offer a range of hotels, motels, and vacation rentals.
Jackson Demonstration State Forest is home to diverse wildlife. While riding, you might encounter various bird species, deer, and smaller mammals. The forest's rich ecosystem, including redwood forests and river passages, provides habitats for many creatures. Maintaining a respectful distance and observing quietly will enhance your chances of a wildlife sighting.


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