4.8
(980)
23,306
hikers
1,142
hikes
Hiking in King County offers a diverse landscape, spanning from the saltwater shorelines of Puget Sound to the forested foothills of the Cascade Mountains. The region features river valleys, numerous lakes, and trails that ascend to viewpoints overlooking the surrounding area. Many routes are located within extensive networks of parks and forests, including the Mt. Baker-Snoqualmie National Forest and Cougar Mountain Regional Wildland Park. This varied terrain provides a wide array of experiences for different skill levels.
Last updated: April 27, 2026
4.8
(49)
1,091
hikers
8.70km
02:49
400m
400m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.8
(8)
169
hikers
8.44km
02:21
160m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.8
(8)
169
hikers
8.44km
02:21
160m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.3
(3)
118
hikers
3.53km
01:52
490m
0m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(10)
75
hikers
10.5km
03:07
310m
310m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(3)
78
hikers
5.48km
01:40
90m
380m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.3
(7)
74
hikers
4.36km
01:20
160m
140m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(8)
634
hikers
4.61km
01:10
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.8
(9)
58
hikers
13.1km
06:09
1,000m
830m
Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.
59
hikers
4.06km
01:04
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Pretty -- don't be deceived by what looks like a trail on the far side of the falls though, it's not a real trail.
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Do not take the loop shown here. There is no trail. I would follow the sign to Snowlake. Another tip, I highly recommend against this hike due to the size of the massive crowds. There was a line of people to go up.
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Be sure to catch the sunset here ... wow ... just wow, it feels otherworldly.
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An absolute gem! There's so much to explore and see here, changing all the time with the seasons. Don't miss the Oaks. Oak trees are a fascinating species that support lots of life. apparently the conifers out compete them and active management, like controlled burns, keep them around for other species to find a happy habitat.
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Be prepared for the extra wind and cold around the ledge. For us, it was raining at the bottom, and snowing at the ledge! Made for cold, but beautiful views!
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Cougar Mountain Park spans nearly 3,000 acres, featuring over thirty-five miles of fantastic trails winding through second-growth forests, streams, wetlands, cliffs, and historical mining caves. There are breathtaking views throughout the park of the Cascade Mountains, Lake Sammamish, Bellevue and Seattle, along with other more secluded areas, which are ideal for spending time surrounded by nature away from the fast pace of the city. Most trails are mainly for hikers; however, some allow horseback riding, so keep an eye out for equestrians as you explore this beautiful area.
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This 230-acre park is an ideal setting for a fantastic run, featuring miles of trails that wind through beautiful trees and stunning scenery. Several loop trails on the grounds provide plenty of options to enjoy a short or extended jog through this lovely area.
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About 0.24 mile below the summit of Mount Si, this viewpoint on the Mt. Si Trail offers sweeping views of the Snoqualmie Valley through the trees. There are some boulders in the way of the view, but some will scramble around to see the view. Be careful, as veering off trail can be unsafe. The best views are close, at the summit!
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For a family-friendly outing, the Green Lake Trail loop is an excellent choice. It's a very flat, paved path around the lake, perfect for strollers and young children. Another great option is the Twin Falls trail in Olallie State Park, which offers the excitement of a waterfall view without a strenuous climb.
Yes, King County offers several strenuous climbs. For a significant challenge, consider the Mailbox Peak Trail, known for its steep ascent and rewarding panoramic views from the summit. Another difficult but popular option is the Mount Si trail, which involves a sustained climb through the forest to a rocky viewpoint.
Many trails in King County are dog-friendly, but dogs are generally required to be on a leash. Trails within King County Parks, such as those in Cougar Mountain Regional Wildland Park, typically welcome leashed dogs. However, some trails in national forests or state parks may have different regulations, and dogs are often not permitted on trails in national parks like Mount Rainier. Always check the specific regulations for the park or trail you plan to visit before you go.
While Snoqualmie Falls is the most famous, it can be very busy. For a beautiful waterfall experience with potentially fewer people, consider the trail to Bridal Veil Falls. The Lake Serene & Bridal Veil Falls Trailhead is the starting point for this moderately challenging hike, which takes you through lush forest to the impressive falls.
Yes, there are several great loop trails. The Discovery Loop Trail in Discovery Park offers a fantastic urban hike with varied scenery, including forests and views of Puget Sound. For a more rugged mountain experience, the Mailbox Peak Loop provides a challenging circuit for advanced hikers.
It depends on where you hike. For Washington State Parks like Olallie State Park, you'll need a Discover Pass. For trailheads in national forests, such as the Mt. Baker-Snoqualmie National Forest, a Northwest Forest Pass is often required for parking. Many King County regional parks, like Cougar Mountain, do not require a parking pass. Always check the trailhead information before you go.
The prime hiking season is typically from July through September when the weather is warmest and most trails, especially at higher elevations, are snow-free. However, many lower-elevation trails in the foothills and along Puget Sound can be hiked year-round. Spring offers blooming wildflowers and powerful waterfalls, while autumn provides beautiful fall colors. Winter hiking is also possible on many trails, but be prepared for rain, mud, and potential snow at higher elevations.
King County is home to several highly-regarded parks for hiking. Cougar Mountain Regional Wildland Park is a vast favorite, offering an extensive network of trails through forests and past historical mining sites. Tiger Mountain State Forest is another popular destination, well-loved for its challenging trails for both hiking and mountain biking. For a different experience, Wallace Falls State Park is famous for its stunning multi-tiered waterfall.
For a day hike in the Cascade foothills, it's essential to be prepared for changing weather. Key items include layered clothing (avoiding cotton), waterproof rain gear, sturdy hiking boots, and extra socks. Always carry the 'Ten Essentials': navigation (map, compass, GPS), sun protection, insulation, illumination (headlamp), first-aid supplies, fire starter, repair kit/tools, extra food, extra water, and an emergency shelter.
Certainly. The Little Si trail is a perfect example. It's a moderately graded hike of about 3.7 miles (5.9 km) that offers a good workout and rewarding views from the top without requiring an all-day commitment.
There is a vast network of trails to explore. Komoot features over 880 hiking routes in King County, ranging from easy lakeside paths to difficult mountain ascents. The region is highly rated by the komoot community, with reviewers often praising the incredible variety of landscapes, from saltwater beaches to alpine lakes.
King County Metro operates a seasonal service called Trailhead Direct, which provides bus transportation to some of the most popular trailheads in the Issaquah Alps and Mount Si area. This is a great way to avoid parking hassles at busy locations. Check the official King County Metro website for current routes, schedules, and operating seasons for the Trailhead Direct service.


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