Pipeline Regional Trail and Siler's Mill Trail

Starting near King County, Washington, the Pipeline Regional Trail and Siler's Mill Trail form a scenic loop of approximately 7 km (4.3 miles) with an elevation gain of around 100 meters (328 feet). This medium-difficulty trail offers a blend of natural beauty and historical significance, making it a rewarding experience for hikers.

### Getting There To reach the trailhead, you can drive or use public transportation. If driving, head towards the nearest known address, which is the Sammamish River Trailhead at 118th Ave NE, Kirkland, WA. From there, it's a short drive to the trailhead. For those using public transport, King County Metro Transit offers bus services that can get you close to the starting point. Check the latest schedules and routes on their website to plan your trip.

### Trail Overview The trail begins with a gentle ascent, allowing you to ease into the hike. The initial section is well-marked and follows the Pipeline Regional Trail, which is known for its wide, gravel paths. This part of the trail is relatively flat, making it accessible for hikers of varying skill levels.

### Nature and Wildlife As you progress, you'll notice the lush greenery that characterizes the Pacific Northwest. The trail is lined with towering Douglas firs and Western red cedars, providing ample shade. Keep an eye out for local wildlife, including deer, raccoons, and a variety of bird species such as woodpeckers and owls. The diverse flora and fauna make this trail a haven for nature enthusiasts.

### Historical Significance About halfway through the loop, you'll encounter Siler's Mill, a historical landmark that dates back to the late 19th century. The mill was once a bustling hub for the local timber industry and played a significant role in the development of the region. Although the mill is no longer operational, remnants of its structure can still be seen, offering a glimpse into the area's rich history.

### Navigation and Landmarks Continuing on, the trail transitions into the Siler's Mill Trail. This section is narrower and more rugged, with a few steep inclines and declines. It's advisable to use a reliable navigation tool like HiiKER to stay on track, especially in areas where the trail may not be as clearly marked. Look out for the small wooden bridges that cross over bubbling creeks, adding a touch of charm to your hike.

### Final Stretch As you near the end of the loop, the trail descends gradually, leading you back to the starting point. This final stretch offers panoramic views of the surrounding landscape, including glimpses of the Sammamish River. The combination of natural beauty and historical elements makes this trail a memorable experience.

Whether you're a seasoned hiker or a casual walker, the Pipeline Regional Trail and Siler's Mill Trail offer a well-rounded adventure that captures the essence of King County's natural and historical heritage.