The best MTB trails around Clayton
4.2
(25)
115
riders
24
rides
Mountain biking around Clayton offers access to varied terrain, including canyons, ridge lines, and the slopes of Mount Diablo. The region features a network of trails that navigate through natural landscapes and historical areas. Elevation changes are common, providing opportunities for both challenging climbs and scenic descents. The area's geology contributes to diverse trail surfaces suitable for mountain biking.
Best mountain bike trails around Clayton
- The most popular mountain bike trail is Mount Diablo Summit Loop via Mitchell Canyon and Donner Canyon, a 14.9 miles (23.9 km) trail that takes 2 hours 55 minutes to complete. This difficult route features significant climbs and panoramic views from the summit.
- Another top favourite among local mountain bikers is Nortonville and Black Diamond Trail Loop, a moderate 10.9 miles (17.5 km) path. This route winds through historic trail systems and varied terrain, offering a mix of challenges.
- Local mountain bikers also love the Stewartville and Ridge Trail Loop, an 8.3 miles (13.4 km) trail leading through ridge lines and historical areas, often completed in about 1 hour 30 minutes.
- Mountain biking around Clayton is defined by canyons, ridge lines, and the slopes of Mount Diablo. The network offers options for different ability levels, from easy paths to difficult summit routes.
- The routes in Clayton are highly rated by the komoot community with an average score of 4.6 stars from over 20 reviews. More than 300 mountain bikers have used komoot to explore Clayton's varied terrain.
Last updated: June 24, 2026
5.0
(2)
11
riders
23.9km
02:55
1,010m
1,010m
This difficult 14.9-mile Mount Diablo Summit Loop via Mitchell Canyon and Donner Canyon offers challenging mountain biking and panoramic vie
5.0
(6)
6
riders
13.4km
01:30
420m
420m
Mountain bike the moderate Stewartville and Ridge Trail Loop for 8.3 miles of challenging climbs, fast descents, and panoramic views of Moun
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4
riders
17.5km
01:53
580m
580m
Mountain bike the 10.9-mile Nortonville and Black Diamond Trail Loop, a moderate route with steep climbs, panoramic views, and historical si
2
riders
13.0km
01:34
490m
490m
The Nortonville and Black Diamond Trail Loop offers a rugged mountain biking adventure through varied terrain, from grassy valleys to California oak woodlands. You'll encounter unpaved fire roads and some technical singletrack, with panoramic views over the Delta and Suisun Bay from higher points. The landscape shifts from green and idyllic in spring to more arid in summer, always providing a dynamic backdrop to your ride. This route is a great choice if you enjoy challenging climbs and historical exploration.
Planning your visit to the Black Diamond Mines Regional Preserve means being ready for some significant effort. This moderate 8.1-mile (13.0 km) loop features 1613 feet (491 metres) of elevation gain, typically taking around 1 hour and 33 minutes to complete. Parking is available at the preserve's entrance, but an entrance fee might be required. Be mindful of seasonal conditions; winter rains can create challenging 'death mud' sections, so spring or drier seasons are often preferred.
What truly sets this trail apart is its rich historical context, offering bike-based exploration of the region's mining past. You'll pass remnants like the Rose Hill Cemetery, the Black Diamond Shaft, and the unusual Jim's Place cave. The Nortonville town site also provides excellent views during descents. This blend of natural beauty and historical intrigue makes the Nortonville Black Diamond Trail Loop a unique mountain biking experience in Contra Costa County.
6.60km
00:50
290m
280m
An easy 4.1-mile mountain biking loop in Mount Diablo State Park, featuring 944 feet of elevation gain and taking about 50 minutes.
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Tips from the Community
Mount Diablo, is the Bay Area second-highest peak at 1173m (3849ft). The challenging climb features constantly fluctuating gradients averaging 8%, with tough sections up to 18% and a brutal 23% finish in the last 200m. The equally demanding descent requires good bike handling due to tight corners, potholes, and strong winds. The road to the top is open daily from 8 AM till sunset.
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The visitor center is staffed year-round, on the weekends, by the State Park volunteers to provide helpful information on the park's natural wonders. There are displays regarding various aspects of Mount Diablo State Park, including trails, wildlife, geology, and plant life. Gates are open from 8:00 am to sunset.
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One of the fiercest peaks in the Bay. Always worth the effort. It’s often much cooler on the summit than the rest of the trails — there is a water spigot up there to fill up bottles. Also a store is open at some times. Don’t bank on it.
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This steep portion of the trail provides a few switchbacks to ease the grade before reaching the Ridge Trail. There is a rest bench at the junction which is an ideal place to stop and catch your breath while you and take in the views of the incredible scenery.
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The Stewartville Trail starts just south of the parking lot and runs through the preserve from east to west, linking the former Somersville and Stewartville mining towns. The route gradually climbs through a small, beautiful valley and can be ridden in either direction, but clockwise is recommended for the best ride. The trail offers excellent views in all directions, with Rose Hill Cemetery visible in the distance while looking west, Sand Creek Valley to the east, and Mount Diablo to the south.
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This preserve is a treasure trove of history, home to the remnants of three mining towns, including former coal and sand mines. The park features include an underground visitor center, guided tours of a former sand mine, and 60 miles (97 km) of trails to explore that crisscross the rolling foothill terrain. The trails offer stunning views of the surrounding landscape, which is a mix of grassland, California oak woodland, California mixed evergreen forest, and chaparral, making it a nature lover's paradise.
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The Rose Hill Cemetery is a site of historical significance that commemorates the memories of the miners and their families who once resided in this area. It pays tribute to the lives of numerous individuals, including children who passed away during epidemics, women who lost their lives during childbirth, and men who died in tragic mining accidents. It's a good place to stop and catch your breath before continuing on to the next incline.
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Frequently Asked Questions
What is the range of difficulty for mountain bike trails around Clayton?
Clayton offers a variety of mountain bike trails suitable for different skill levels. You'll find 7 easy routes, 19 moderate routes, and 2 difficult routes, including challenging climbs to Mount Diablo's summit.
Are there mountain bike trails suitable for beginners in Clayton?
Yes, there are 7 easy mountain bike routes around Clayton. An example is the Falls Trail Loop, which is 4.1 miles (6.6 km) long and takes about 50 minutes to complete.
Which mountain bike trails offer a challenge for experienced riders?
For experienced riders seeking a challenge, the Mount Diablo Summit Loop via Mitchell Canyon and Donner Canyon is a difficult route. It spans 14.9 miles (23.9 km) with significant elevation gain, typically taking around 2 hours 55 minutes to complete.
Are there any circular mountain bike trails around Clayton?
Yes, many of the mountain bike trails in Clayton are circular. For example, the Nortonville and Black Diamond Trail Loop is a moderate 10.9 miles (17.5 km) route that forms a loop through historic trail systems. Another option is the Stewartville and Ridge Trail Loop, an 8.3 miles (13.4 km) circular trail.
What can I see or explore near the mountain bike trails in Clayton?
While mountain biking, you can explore several points of interest. The Mount Diablo Summit offers panoramic views, and the Devil's Pulpit is another notable viewpoint. For facilities or information, the Mitchell Canyon Visitor Center is a good stop. You can also find natural features like Twin Ponds or the Contra Loma Reservoir nearby.
What do other mountain bikers enjoy most about the trails in Clayton?
The mountain bike trails around Clayton are highly rated by the komoot community, with an average score of 4.6 stars from over 20 reviews. Riders often praise the varied terrain, including canyons and ridge lines, and the opportunities for both challenging climbs and scenic descents, especially on routes leading to Mount Diablo's summit.
Are there any shorter mountain bike trails available in Clayton?
Yes, if you're looking for a shorter ride, the Falls Trail Loop is an easy 4.1 miles (6.6 km) route that can be completed in about 50 minutes. This is a good option for a quicker outing.
When is the best time of year for mountain biking in Clayton?
The region around Clayton offers varied terrain that can be enjoyed throughout much of the year. However, spring and fall generally provide the most pleasant conditions with milder temperatures. Summers can be hot, and winter might bring rain, affecting trail conditions.
What are the typical winter conditions for mountain biking in Clayton?
During winter, Clayton can experience cooler temperatures and occasional rainfall. Trails may become muddy or slippery, especially in shaded areas or after heavy precipitation. It's advisable to check local weather and trail conditions before heading out during the winter months.
Are there any trails that pass by lakes or water features?
While the trails primarily focus on canyons and ridge lines, you can find water features nearby. The Twin Ponds and Contra Loma Reservoir are accessible in the broader Clayton area, offering additional scenic spots to explore.
How many mountain bike trails are there in total around Clayton?
There are 28 mountain bike trails available around Clayton, offering a wide range of options for different skill levels and preferences.
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