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MTB trails
United States
Washington
King County

Black Diamond

The best MTB trails around Black Diamond

5.0

(3)

177

riders

12

rides

Mountain bike trails around Black Diamond offer a diverse range of riding experiences within a landscape characterized by extensive forested areas and varied terrain. The region features a network of trails, including the Black Diamond Open Space, which connects to other systems like Henry's Ridge and Summit Ridge. Situated in the foothills of the Cascades, the area provides views of Mount Rainier and includes natural features such as the Green River Gorge and Lake Sawyer.

Best mountain bike trails around…

Last updated: May 4, 2026

5.0

(1)

54

riders

#1.

Rocky Trail – Lil Beaver Trail loop from Maple Valley

19.9km

01:39

170m

170m

Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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Hard

Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard
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Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

9

riders

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Tips from the Community

Anette
March 11, 2022, Lil Beaver Trail

Henry's Ridge is a former industrial timber land. Today it is a protect natural lands with nearly 20 miles of multi-use trails for hiker, trailrunner and moutainbiker.

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Frequently Asked Questions

What kind of mountain biking terrain can I expect around Black Diamond?

The Black Diamond area offers a diverse range of mountain biking terrain, from challenging climbs and descents to fun, flowy, and family-friendly sections. You'll find a network of trails within the Black Diamond Open Space (BDOS) and connecting systems, featuring machine-built sections with berms, rollers, and even tabletop jumps. Some trails, like parts of the Rocky Trail and Lil Beaver Trail, can be quite demanding, requiring advanced skills or even short sections of pushing your bike.

Are there mountain bike trails suitable for beginners or families in Black Diamond?

Yes, the Black Diamond Open Space (BDOS) is known for offering 'fun, flowy, and family-friendly rides' that are suitable for learning and progression. While specific beginner routes aren't detailed in the guide, the overall network provides options for different ability levels, including more accessible sections designed for a smoother experience.

What are some of the longer mountain bike routes available?

For a longer ride, consider the Rocky Trail – Lil Beaver Trail loop from Kentlake High School, which covers 15.5 miles (25.0 km). Another substantial option is the Rocky Trail – Lil Beaver Trail loop from Maple Valley, spanning 12.4 miles (19.9 km).

Are there any loop trails for mountain biking in Black Diamond?

Yes, many of the mountain bike routes around Black Diamond are designed as loops. For example, you can ride the Rocky Trail – Lil Beaver Trail loop from Maple Valley or the Rocky Trail loop from Black Diamond Open Space - Ravensdale Creek. These loops provide a continuous riding experience without needing to retrace your path.

What natural attractions or landmarks can I see near the mountain bike trails?

Beyond the trails, the Black Diamond area is rich in natural beauty. You can explore the dramatic sandstone cliffs and forested sides of the Green River Gorge, which offers scenic views from bridges like Kummer Bridge on State Route 169. Lake Sawyer, the fourth-largest natural lake in King County, is also nearby. Additionally, the Cedar River Trail and Landsburg Reach Natural Area offer further opportunities to experience the region's landscapes.

What do other mountain bikers enjoy most about riding in Black Diamond?

The mountain bike trails in Black Diamond are highly rated by the komoot community, with an average score of 5.0 stars. Riders often praise the diverse trail systems, extensive forested land, and the variety of options available for different skill levels, from flowy sections to challenging routes.

What is the best time of year to go mountain biking in Black Diamond?

While specific seasonal recommendations aren't provided, the region's extensive forested areas suggest that trails might be enjoyable during spring, summer, and fall. For winter riding, it's always advisable to check local trail conditions as weather can impact accessibility and safety.

Are there any advanced or difficult mountain bike trails in the area?

Yes, Black Diamond offers several difficult mountain bike trails. For instance, the Rocky Trail – Lil Beaver Trail loop from Maple Valley and the Rocky Trail loop from Black Diamond Open Space - Ravensdale Creek are both rated as difficult. These routes often feature challenging terrain and require a good level of riding skill.

How many mountain bike routes are available in Black Diamond?

There are over a dozen mountain bike routes documented in Black Diamond, offering a wide selection for riders. These include a mix of easy, moderate, and difficult trails to suit various preferences and skill levels.

Are there any specific trails within the Black Diamond Open Space that are popular?

Within the Black Diamond Open Space, trails like Crooshal, Sasquatch, Spooky, Cheata, and Kathleen are known for their flowy, machine-built sections, berms, rollers, and tabletop jumps. Other popular trails include Sobriety, Jump Line, Knuckle Head, ATM, and Salvation, all contributing to a varied riding experience.

Can I connect to other mountain biking networks from Black Diamond?

Yes, Black Diamond's trail systems connect to broader networks, significantly expanding your riding opportunities. These connections include popular mountain biking areas such as Henry's Ridge, Summit Ridge, Tiger Mountain, Duthie Hill, and Raging River State Forest.

Are there any viewpoints or scenic spots along the mountain bike trails?

While specific viewpoints directly on the mountain bike trails are not detailed, the region itself offers scenic beauty. Black Diamond is situated in the foothills of the Cascades, providing views of Mount Rainier. The Green River Gorge also offers dramatic natural scenery, which can be appreciated from nearby areas.

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