4.4
(14)
168
riders
12
rides
Gravel biking in Marckworth State Forest features an extensive network of logging roads that traverse diverse terrain. The landscape is characterized by rumpled, rocky hills, dense forests, and numerous creeks and streams. These varied surfaces offer a mix of challenging climbs and descents, providing routes suitable for different fitness and skill levels. The forest's active management contributes to a dynamic environment for outdoor exploration.
Last updated: June 29, 2026
4.0
(1)
13
riders
37km
02:46
510m
510m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
21
riders
42.2km
03:05
570m
570m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4
riders
74.0km
05:42
1,020m
1,020m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
31
riders
The Snoqualmie Valley Trail – Nick Loutsis Park loop from Arborwood Open Space offers a delightful gravel biking adventure, tracing a historic rail-trail through the heart of the Snoqualmie Valley. This moderate 20.1-mile (32.4 km) route, with 536 feet (163 metres) of elevation gain, guides you through a diverse landscape of working farms, lush forests, and scenic riverbanks, often paralleling the Snoqualmie River. You'll experience a mix of packed gravel and crushed rock surfaces, with a noticeable 400-foot climb south of Carnation, making the 1 hour and 44 minutes a satisfying workout amidst beautiful surroundings.
Starting your journey at Arborwood Open Space provides convenient access to this popular loop. The trail is generally accessible year-round, but the ample shade from dense, moss-draped trees makes it particularly pleasant during the summer months. While no specific permits are required for this section, it's always a good idea to check local conditions before you go, especially for any potential on-road detours or seasonal considerations that might affect your ride.
This section of the Snoqualmie Valley Trail is part of King County's extensive regional trails system, following the path of the former Milwaukee Road Everett Branch Line. It's celebrated for its varied scenery, from agricultural valleys to dense forests, and its role as a segment of the Great American Rail-Trail. The route offers a unique opportunity to explore the region's natural beauty and history, making it a notable choice for gravel biking enthusiasts seeking a blend of exercise and exploration.
10
riders
Embark on a scenic gravel biking journey along the Snoqualmie Valley Trail, starting from Nick Loutsis Park. This route guides you through lush dairy lands, past working farms, and alongside the tranquil Snoqualmie River, offering glimpses of distant mountain peaks like Mount Si. The predominantly hard-packed gravel surface is ideal for a smooth ride, though some sections may present rougher patches, adding a touch of adventure to the picturesque scenery.
Planning your ride is straightforward, with Nick Loutsis Park in Carnation providing a convenient starting point and basic facilities like a porta-potty. This moderate 34.5-mile (55.5 km) loop, with 910 feet (277 metres) of elevation gain, typically takes around 2 hours and 54 minutes to complete. While generally flat, be prepared for some gradual climbs, making it a rewarding experience for a wide range of fitness levels.
This trail is a fantastic example of a rail-to-trail conversion, following the historic route of the Chicago, Milwaukee, St. Paul & Pacific Railroad. It offers a peaceful escape into nature, away from traffic noise, with opportunities for wildlife spotting. You can also connect to other regional trails or make side trips to attractions like Tolt-MacDonald Park, enhancing your exploration of the Snoqualmie Valley.
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It depends on the time of year if the geese are migrating. We did not see geese in the field, but at least five different groups of dozens in each in the sky maneuvering around each other. It took one flock that seemed to know where they were going to head south and lead the others in the right direction.
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Perfect trailhead for the Snoqualmie Trail. Good parking, porta potty, plenty of shade.
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Wonderful trail between Carnation and Snoqualmie - wooded, a slight uphill, good surface.
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From this interesting suspension bridge, you'll have great views of the Snoqualmie River next to the beautiful Tolt MacDonald Park.
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Historic road that's great to ride, offering fantastic views of the Snoqualmie River, along with its flat terrain and low volume of traffic.
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Beautiful ride along the river. Very hard pack gravel. Almost completely flat except a section by Fall City where there is a very gradual rise.
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One of the nicest stretches of road for cycling in the area - flat with little traffic and great views!
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Marckworth State Forest offers a network of 15 gravel bike trails. These routes vary in difficulty, with 2 easy, 4 moderate, and 9 difficult options, providing diverse experiences for different skill levels.
The terrain in Marckworth State Forest is characterized by an extensive network of logging roads, offering a mix of surfaces from paved sections to light, loose gravel. You'll encounter rumpled, rocky hills, dense forests, and expansive wetlands, often with challenging climbs and descents. Wider tires are recommended for these varied conditions.
While many routes in Marckworth State Forest are considered moderate to difficult, there are 2 routes categorized as easy and 4 as moderate. For a moderate option, consider the Nick Loutsis Park – Snoqualmie Valley Trail loop from Cedarcrest High School, which covers 55.7 km with less elevation gain compared to the more challenging trails.
Marckworth State Forest is rich in natural beauty. You can find serene spots like Swan's Mill Pond, which is featured on the Swans Mill Pond loop from Lake Marcel-Stillwater. The forest also boasts numerous creeks and streams, and from higher elevations like Elwell Cliffs or Platts Lookout, you might catch expansive views towards Mount Pilchuck and Three Fingers.
Yes, Marckworth State Forest is generally dog-friendly, allowing you to bring your canine companion along for your gravel biking adventures. Always ensure your dog is under control and follow any posted regulations regarding leashes or waste disposal.
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 10 reviews. Riders often praise the extensive network of logging roads, the diverse and challenging terrain, and the sense of tranquility and remote exploration despite its proximity to urban areas.
Yes, Marckworth State Forest offers several longer loop options. The Swans Mill Pond – Cedar Ponds Lake loop from Duvall is a challenging 77.8 km route, while the Tokul Creek Trestle – Snoqualmie Valley Trail loop from Cedarcrest High School covers 69.2 km, providing extensive riding through varied forest landscapes.
Gravel bikes with wider tires are ideal for the varied surfaces found in Marckworth State Forest, which range from paved sections to loose gravel logging roads. Mountain bikes are also suitable and can handle the challenging climbs and descents effectively.
A Washington State Discover Pass is required for vehicle access and recreation within Marckworth State Forest. Ensure you have this pass displayed if you are parking a vehicle at a trailhead.
Parking is typically available at various access points to the forest's logging road network. Many routes, such as the Swans Mill Pond loop and Sultan loop, start from areas like Lake Marcel-Stillwater, which offer convenient access. Remember that a Washington State Discover Pass is required for vehicle access.
While Marckworth State Forest can be explored year-round, the best time often depends on weather conditions. Spring and fall offer pleasant temperatures and vibrant scenery. During wetter months, some gravel sections might become softer, so checking current trail conditions is advisable.
Yes, some routes extend towards nearby towns or connect with other trail systems. For instance, the Sultan loop from Lake Marcel-Stillwater explores logging roads leading towards the town of Sultan. Additionally, the Tokul Creek Trestle – Snoqualmie Valley Trail loop from Cedarcrest High School incorporates sections of the Snoqualmie Valley Trail.


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