Forest Guide
King County is home to 3 state forests that provide extensive recreational opportunities. These forested areas are spread across the county's eastern side, featuring landscapes that range from temperate rainforests and river canyons to dense woodlands and wetlands. The varied terrain makes the forests in King County a major destination for outdoor activities such as hiking, mountain biking, and gravel biking.
This list of forests in King County aggregates more than 300 routes, with over 8,000…
325
Routes
4.7
(442)
Average rating
8719
Explored with komoot
Last updated: April 23, 2026

4.8
(214)
4,934
hikers
Raging River State Forest offers diverse terrain for hiking, mountain biking, and touring cycling through temperate rainforest, river canyons, and rocky outcrops east of Seattle.
Hiking
Running
Mountain biking
Gravel riding
Road cycling
Cycling

4.8
(179)
2,904
hikers
Tiger Mountain State Forest offers diverse landscapes and undulating terrain for hiking, mountain biking, jogging, and touring cycling on its extensive trail network.
Hiking
Running
Mountain biking
Gravel riding
Road cycling
Cycling

4.2
(49)
881
hikers
Marckworth State Forest, east of Duvall, Washington, offers diverse terrain for hiking, cycling, and running on gravel logging roads through woodlands and wetlands.
Hiking
Running
Mountain biking
Gravel riding
Road cycling
Cycling
King County is home to three major state forests managed for both recreation and sustainable timber harvesting. These include Tiger Mountain State Forest, Raging River State Forest, and Marckworth State Forest. The county also contains other significant forested areas, such as Cougar Mountain Regional Wildland Park and portions of the Mount Baker-Snoqualmie National Forest.
The primary activities in King County's state forests are hiking, mountain biking, and cycling. Across the three main forests, there are more than 300 routes available. Trail running is also a common activity, with dedicated running trails found throughout the region.
Tiger Mountain State Forest has the largest number of routes, with 139 trails available for hiking, mountain biking, and cycling. It is followed closely by Raging River State Forest, which offers 122 routes.
Tiger Mountain State Forest is a working forest known for its extensive trail system catering to hikers, trail runners, and mountain bikers. Located near Issaquah, its proximity to urban areas makes it a highly accessible destination for outdoor recreation. The forest features a mix of coniferous and deciduous trees with hilly terrain.
Raging River State Forest is particularly noted for its mountain biking trails, but it also offers numerous routes for hiking and gravel cycling. The landscape includes temperate rainforest, river canyons, and rocky outcrops. It has the highest number of visitors among the three state forests on this page.
Yes, hiking is a primary activity in King County's forests. Tiger Mountain State Forest offers 69 hiking routes, while Raging River State Forest has 55. These trails range in difficulty and navigate through diverse landscapes of dense woodlands and river valleys.
Yes, mountain biking is a popular activity in the region's state forests. Raging River State Forest is a key destination for mountain bikers, offering a mix of trail types. Tiger Mountain State Forest also provides numerous mountain bike trails for various skill levels.
Yes, many forests in King County offer trails suitable for families and beginners. For example, Cougar Mountain Regional Wildland Park features an extensive network of trails with interpretive signs about the area's history. Marckworth State Forest provides routes on gentler gravel logging roads suitable for easier hikes.
A 'working forest,' such as Tiger Mountain State Forest, is an area managed to balance sustainable timber harvesting with public recreation and conservation. These forests are actively managed for forest health and timber production while providing an extensive network of trails for public use. This model ensures the land remains productive, healthy, and accessible.
The forests in King County feature diverse landscapes. You can find temperate rainforests, river canyons, and rocky outcrops in Raging River State Forest. Tiger Mountain State Forest is characterized by hilly terrain with a mix of coniferous and deciduous trees. Other areas like Cougar Mountain Regional Wildland Park include mature second-growth forests, wetlands, and historic coal mining sites.

