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United States
Washington

Grays Harbor County

The best MTB trails in Grays Harbor County

70

riders

10

rides

Mountain biking in Grays Harbor County offers diverse terrain, from Pacific Ocean beaches to lush rainforests and dense forests. The region is characterized by significant elevation changes, numerous lakes, and salmon-filled rivers, providing varied backdrops for mountain bike trails. This area, located in the southwest corner of Washington's Olympic Peninsula, features a mix of logging roads and single-track routes.

Best mountain bike trails in Grays Harbor County

  • The most popular mountain bike trail is Mima Falls & McKenny Trail loop…

Last updated: May 10, 2026

15

riders

#1.

Mima Falls and McKenny Trail Loop

20.4km

02:03

430m

430m

Embark on the Mima Falls and McKenny Trail Loop for a moderate mountain biking adventure through the diverse landscapes of Capitol State Forest. This 12.7 miles (20.4 km) route, featuring…

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Moderate

28.0km

03:07

840m

840m

Mountain bike the moderate Rock Candy Mountain Loop in Capitol State Forest, a 17.4-mile ride with 2751 feet of elevation gain.

Moderate
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The Wynoochee Lake Shore Trail offers a varied mountain biking experience through old-growth and second-growth forests, following the scenic Wynoochee River and Lake. You will navigate singletrack, enjoying beautiful views…

Moderate

1

riders

Explore the Lost Valley and McKenny Loop, a moderate 15.9-mile mountain biking trail through diverse woodland scenery in Capitol Forest.

Moderate

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

Moderate

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

Moderate

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

Hard

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

Hard

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Tips from the Community

Lisa
July 29, 2024, Mima Falls Trailhead

If you're planning to run any part of this trail, show up early; the trailhead parking area only holds about 30 cars. You'll need a Discover Pass ($35 annual, or $11.50 day pass) to enter. In the eastern reaches of the park, you may hear gunfire from the nearby shooting range.

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If you want a change of pace, you can hop off the singletrack trails and rip down (or climb up) some of the dirt and gravel service roads in the area. Even if your entire ride is on the road, you'll still get great views (and plenty of hills to go with those views)! That being said, the trails and road system intersect so much that it's worth doing a bit of both when out for a ride.

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At an elevation of 2,356 feet, Rock Candy Mountain is one of the tallest peaks in Thurston County. The trail and road systems covering the mountain and surrounding foothills are heavily utilized by off-roaders and mountain bikers. There are a few different loops you can make out here, some just an hour long and others extending over 30 miles.

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This trailhead is open to motorized off-road vehicles. Expect to share the trails with ORVs.

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Lost Valley is a popular trail in Capitol State Forest for good reason: it has a little bit of everything. From singletrack to double-track to smooth trails to some rockier sections of path, this trail gives you a lot of solitude quickly and connects to a couple of the other popular trails in the park.

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Matthew
May 25, 2024, Mima Falls

Mima Falls is a year round waterfall in Capitol State Forest. This is definitely worth stopping at checking out. There is often times a small pool at the base of the cascade if you are needing to cool off. A lot of the roads and trails in the forest are open to mountain bikers, and the trails here in the southeastern portion of the property are some of the easier "green" trails.

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Juliet
February 6, 2024, View of Capitol Peak

Capitol Peak is one of the highest peaks in the Capitol State Forest. Views of the Cascades and out to Grays Harbor make the final climb up "The Grunt" worth the effort.

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Scott
January 18, 2024, Capitol State Forest

Capitol State Forest, spanning 110,000 acres, boasts the intriguing Mima Mounds. As a multi-use haven, it accommodates off-road motorcycles, mountain biking, horseback riding, and hiking, fostering successful coexistence among diverse recreational groups.

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Frequently Asked Questions

How many mountain bike trails are available in Grays Harbor County?

There are over 10 mountain bike trails in Grays Harbor County, offering a range of experiences from easy rides to challenging routes. Nearly 100 mountain bikers have used komoot to explore the diverse terrain here.

What kind of terrain can I expect on mountain bike trails in Grays Harbor County?

Grays Harbor County offers incredibly diverse terrain. You can expect everything from coastal trails near the Pacific Ocean, lush rainforest environments in areas like the Quinault Rainforest, to dense second and third-growth forests. Many routes feature significant elevation changes and a mix of logging roads and single-track trails.

Are there mountain bike trails suitable for beginners in Grays Harbor County?

Yes, Grays Harbor County has several easy mountain bike trails perfect for beginners or those looking for a more relaxed ride. For example, the Little Larch Mountain loop from Little Larch Mountain is an easy option, as is the Mima Falls loop from Los Cedros MHP.

Are there challenging mountain bike trails for experienced riders?

Absolutely. Experienced riders will find challenging routes with substantial elevation gains and technical sections. The Mima Falls – Capitol State Forest loop from Margaret McKenny Trailhead is a difficult route covering over 36 km with significant climbing. Areas like the Montesano City Forest and West Fork Humptulips also offer advanced single-track trails.

What do other mountain bikers say about the trails in Grays Harbor County?

The mountain biking trails in Grays Harbor County are highly rated by the komoot community, with an average score of 5.0 stars. Riders often praise the varied forest terrain, scenic views, and the sense of adventure found on routes like the Mima Falls & McKenny Trail loop — Capitol State Forest.

Are there mountain bike trails with scenic views or natural landmarks?

Many trails in Grays Harbor County offer stunning views and pass by notable natural features. The Wynoochee Lake Shore Trail loop — Olympic National Forest provides scenic views of Wynoochee Lake and the surrounding mountains. You can also explore areas near the Quinault Rainforest, known for its old-growth trees and unique vegetation, or ride near the Pacific Ocean coastline for dramatic vistas.

Can I find mountain bike trails that are loop routes?

Yes, many mountain bike trails in Grays Harbor County are designed as loops, offering a convenient way to explore without retracing your steps. Popular loop options include the Rock Candy Mountain Trail loop — Capitol State Forest and the Lost Valley loop from Middle Waddell Trailhead — Capitol State Forest.

What is the best time of year to go mountain biking in Grays Harbor County?

The best time for mountain biking in Grays Harbor County is generally during the drier months, from late spring through early fall (May to October). This period offers more predictable weather and firmer trail conditions. While winter riding is possible, be prepared for wet and muddy conditions, especially in forested areas, and check local trail reports.

Are there family-friendly mountain bike trails in Grays Harbor County?

Yes, Grays Harbor County offers family-friendly mountain biking options. The region has easy trails suitable for various skill levels, and some areas like Seabrook are developing trail systems that cater to families. Always check the specific trail difficulty and length to ensure it's appropriate for your family's experience.

Are dogs allowed on mountain bike trails in Grays Harbor County?

Dog policies vary by specific trail and land manager. In areas like Capitol State Forest, dogs are generally allowed on trails but must be kept on a leash. For trails within Olympic National Forest or State Parks, it's best to check their specific regulations regarding pets before you go.

Are there any mountain bike trails that pass by waterfalls?

Yes, the region's diverse landscape includes areas with waterfalls. The Wynoochee Lake Shore Trail, for instance, offers scenic views that can include waterfalls, especially during wetter seasons. The Quinault Rainforest area also features numerous waterfalls and nature trails that can be explored in conjunction with biking.

Where can I find parking for mountain bike trailheads in Grays Harbor County?

Parking is typically available at designated trailheads within areas like Capitol State Forest, Lake Sylvia State Park, and near Wynoochee Lake. Specific parking information can often be found on individual route pages or by checking the websites of the respective park or forest management. Some areas may require a Discover Pass for parking.

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