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.
Last updated: May 4, 2026
5.0
(1)
54
riders
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.
27
riders
8.30km
00:41
30m
40m
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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5.0
(1)
21
riders
25.0km
01:44
130m
130m
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.
5.0
(1)
21
riders
34.9km
02:44
280m
280m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
9
riders
27.3km
02:01
160m
160m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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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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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.
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.
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).
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.
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.
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.
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.
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.
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.
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.
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.
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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