Boulder River Trail

The Boulder River Trail is located near Arlington, Washington. The trailhead provides access to this popular route. Parking is generally available at the trailhead, but as it's a well-known entry into the Boulder River Wilderness, arriving earlier in the day is advisable, especially during peak times, to secure a spot.

Yes, as the Boulder River Trail is located within the Boulder River Wilderness, you will likely need a Northwest Forest Pass or a similar recreation pass. It's always best to check the latest regulations with the U.S. Forest Service before your visit to confirm any required permits or fees.

Yes, the Boulder River Trail is generally dog-friendly. However, since it's within a wilderness area, dogs must be kept on a leash to protect wildlife and ensure a pleasant experience for all trail users. Please remember to pack out all pet waste.

The Boulder River Trail is accessible year-round. However, for the most comfortable jogging experience, late spring through early fall (May to October) is ideal. During wet months, sections of the trail can become very muddy with standing water and deeper stream crossings, and downed trees may present obstacles, making it more challenging.

The terrain on this trail is varied. Early sections, once a logging route, are wide and gently graded, making them easy on the legs. As you progress, you'll encounter dry wide and narrow sections, mud, river rock, and bridges. Some parts can be rooted and rocky. While generally rated easy to moderate with a gentle grade, conditions can become challenging with significant mud and stream crossings, especially after heavy rain. It's suitable for beginners who are prepared for varied conditions.

The Boulder River Trail is an 8.4-mile out-and-back route. For jogging, it typically takes around 1 hour and 40 minutes to complete, depending on your pace and how often you stop to enjoy the scenery.

Joggers on the trail are immersed in a lush old-growth forest with towering, moss-covered trees. The route follows the Boulder River, offering scenic river views and the sound of rushing water. A major highlight is Boulder Falls, a beautiful set of twin streams cascading into the river, located just over a mile in. An unnamed waterfall can also be found about half a mile beyond Feature Show Falls.

The Boulder River Wilderness is home to a variety of wildlife. You might encounter black bears, black-tailed deer, cougars, and mountain goats. Always be aware of your surroundings and practice Leave No Trace principles to protect these animals and their habitat.

Given the varied terrain and potential for mud, especially during wet seasons, sturdy trail running shoes with good grip are recommended. Depending on conditions, high-top boots and gaiters might be beneficial. Always carry water, snacks, navigation tools, and appropriate layers for changing weather in the Pacific Northwest. Bear spray is also a consideration due to local wildlife.

The Boulder River Trail is an out-and-back route, meaning you will return along the same path you took to reach the turnaround point. There are no loop options for the main trail.

The Boulder River Trail is located in a wilderness area, so amenities directly at the trailhead are minimal. It's best to come prepared with all necessary supplies. For cafes, pubs, or accommodation, you would need to travel to nearby towns such as Arlington or Darrington.