4.8
(209)
2,677
riders
104
rides
Mountain biking in King County offers a diverse range of terrain, from the challenging peaks of the Issaquah Alps to rolling lowlands. The region is characterized by extensive trail networks winding through dense evergreen forests of Douglas fir and western hemlock. These varied landscapes provide a wide array of mountain biking experiences, including vigorous climbs and technical downhill sections. King County's natural areas often feature wetlands, riparian zones, and small lakes, adding to the scenic beauty of the trails.
Last updated: April 26, 2026
5.0
(1)
36
riders
9.44km
01:14
420m
420m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
14
riders
14.7km
01:43
510m
490m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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5.0
(3)
97
riders
15.7km
01:47
520m
520m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(4)
73
riders
24.0km
02:26
560m
560m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
65
riders
31.2km
03:49
1,260m
1,260m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
5.0
(63)
28
riders
8.42km
00:45
90m
90m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
19
riders
32.8km
03:54
1,210m
1,210m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
1
riders
3.16km
00:16
20m
20m
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.
4.7
(15)
239
riders
10.4km
00:53
100m
100m
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.
4.9
(7)
223
riders
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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Popular around King County
MTB Trails in Squak Mountain State Park
MTB Trails in Raging River State Forest
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MTB Trails around Hobart

MTB Trails around Mirrormont
MTB Trails in Tiger Mountain State Forest
MTB Trails around Riverbend
MTB Trails around North Bend
MTB Trails around Wilderness Rim
MTB Trails in Snoqualmie Forest
This is the intersection of the Upward Mobility Trail and Rattlesnake Mountain Trail. The Upward Mobility Trail is popular with mountain bikers, so make sure you keep an eye out for other trail users as you pass by.
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Tiger Mountain State Forest in Mirrormont, Washington, beckons mountain bikers with diverse trails catering to all skill levels. From smooth singletracks to technical descents, thrill-seekers will find excitement. Highlights include Predator and Off the Grid for adrenaline rushes, and challenges await on trails like Fully Rigid and Joyride. There is parking and restrooms at the trailhead here.
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From it's summit you are rewarded with breathtaking views. Whether you choose to savor a picnic lunch or simply take a moment to soak in the beauty of nature, the picnic table provides a serene and comfortable setting to enhance your experience.
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Nice pump track. For beginners, but also everyone else 🤘
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Grand Ridge Route is a fantastic (out-and-back) ride that connects Issaquah with Duthie Hill Park. Beginners will love it!
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This is where the Rattlesnake Mountain Trail (attention: hikers only) and the Upward Mobility Trail (for cyclists) begins. On Upward Mobility you gain over 1,000 feet in only 2.8 miles. Continue with Raging Ridge Trail if you are up for an technical 20 mile ride (aka Raging River Loop) or take Flow State Trail for a short and easy workout. No matter what you choose: You will have a blast!
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Great Out-and-Back trail with stunning views. Also perfect for beginners as you can turn around whenever you like.
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A popular beginner trail at Soaring Eagle Park: No major climbs, no obstacles, simply pure fun!
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King County offers a vast network of mountain bike trails, with over 120 routes documented on komoot. These trails span diverse terrain, from the challenging Issaquah Alps to rolling lowlands, providing options for all skill levels.
Yes, King County has a good selection of trails for beginners. Approximately 30 easy routes are available. An example is the Soaring Eagle Outer Loop, which is 5.2 miles (8.4 km) long and leads through forested parkland.
For experienced riders seeking a challenge, King County offers around 30 difficult routes. Areas like Tiger Mountain and Raging River State Forest are known for their technical sections and vigorous climbs. Consider the Master Link and Predator Loop, a 5.9-mile difficult route in the Tiger Mountain area, or the Raging River Loop, which is over 19 miles long with significant elevation gain.
King County is home to several renowned mountain biking destinations. Duthie Hill Mountain Bike Park is world-renowned for its six-mile network of singletrack trails, jumps, and drop-offs. Other popular areas include Tiger Mountain State Forest and Raging River State Forest, both offering extensive trail systems. The King County Parks website provides more details on Duthie Hill.
Many trails in King County offer beautiful views, particularly those in the Issaquah Alps region. Routes on Tiger Mountain often provide sweeping vistas of the Pacific Northwest landscape. On clear days, some trails around Lake Sawyer even offer views of Mount Rainier.
Yes, many mountain bike trails in King County are designed as loops, allowing for a continuous riding experience. For example, the Northwest Timber, Legend, Joyride, East Tiger, and Master Link Loop is a challenging 9.7-mile route on Tiger Mountain.
King County's trails wind through diverse natural landscapes. You'll often ride through dense evergreen forests of Douglas fir and western hemlock. Many parks and natural areas also feature wetlands, riparian zones, small lakes, and ponds. The region is known for its lush, immersive riding environments.
While not directly on mountain bike trails, King County is home to impressive waterfalls that can be visited nearby. The iconic Snoqualmie Falls is a notable natural monument. Other waterfalls in the region include Franklin Falls and Coal Creek Falls.
The mountain biking experience in King County is highly rated by the komoot community, with an average score of 4.8 stars from over 230 reviews. Riders frequently praise the extensive and well-maintained trail networks, the variety of terrain suitable for all skill levels, and the beautiful, immersive evergreen forests that provide a unique Pacific Northwest riding environment.
Yes, King County offers several longer routes for those looking for extended rides. The Grand Ridge Trail is a moderate 14.9-mile (23.9 km) path that winds through pristine forest and connects to the Duthie Hill network. Another option is the Olallie Trail, a challenging 20.4-mile route.
King County's extensive backcountry trail networks are generally accessible year-round for mountain biking. However, the dense evergreen forests provide good cover, and the Pacific Northwest climate means trails can be wet, especially in winter. Always check local trail conditions before heading out, as some areas may have seasonal closures or muddy sections.
Yes, King County's trail system is well-connected. Duthie Hill Mountain Bike Park, for instance, connects to Grand Ridge Park and Soaring Eagle Park. The Black Diamond Open Space also offers connections to Henry's Ridge and Summit Ridge, allowing for longer, interconnected rides across different natural areas.


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