Tunnel Light Marathon 2025

• Fast Downhill Course: Ideal for personal records and Boston Marathon qualification with over 2,000 feet of elevation drop.
• Tunnel and Scenery: Features a dark tunnel requiring a headlamp and stunning views of mountains and waterfalls.
• Support and Logistics: Ten aid stations; limited road access requires carrying a water bottle and cell phone.
• Boston Certified: USATF certified; high percentage of runners qualify for Boston here.
• Early Start Option: Available for those needing extra time, but requires self-support.

The Tunnel Light Marathon provides a unique and exhilarating running experience, starting in Hyak, at Snoqualmie Pass, and traversing down to North Bend via scenic gravel rail-trails. The course is renowned for its consistent downhill slope, averaging a 2.2% decline, which is ideal for runners seeking fast times or Boston Qualification. One of the standout features is the 2-mile unlit tunnel through which runners must carry flashlights or headlamps, adding an adventurous twist to the race. With an overall elevation loss of 2116 feet and very minimal climb, this event is frequently used as a qualifier for the Boston Marathon, evident by its high percentage of successful qualifiers. Alongside the breathtaking natural backdrops, participants can expect a meticulously organized event, complemented by supportive volunteers, efficient logistics, and thoughtful amenities, such as drop bag services and post-race refreshments at the finish line. The welcoming atmosphere and remarkable organization make the Tunnel Light Marathon not only a race but a memorable experience for any marathon enthusiast.

Expect temperatures between 56-72°F (13-22°C) with mild humidity for the Tunnel Light Marathon in North Bend, Washington, this mid-September. The forecast for September 14, 2025, promises partly cloudy skies and a 0% chance of rain, offering ideal running conditions. While historical data shows a possibility of light rain, the day is set to be dry, ensuring a smooth race experience.

The Tunnel Light Marathon offers an exhilarating point-to-point journey from Snoqualmie Pass to North Bend, Washington. Starting at the Hyak trailhead on the Palouse to Cascades Trail, runners quickly find themselves enveloped in the mystery of a 2.4-mile pitch-black tunnel, where headlamps or flashlights become essential companions. Emerging from the tunnel, participants are greeted by the beauty of forested slopes leading to the Cedar Falls Trailhead at Rattlesnake Lake. The course then weaves through a lush, second-growth forest along the Snoqualmie Valley Trail, culminating at a welcoming gravel parking lot near North Bend.

What sets this marathon apart is its consistent 2.2% downhill grade, which drops over 2,000 feet in elevation, making it one of the fastest courses in the country. This unique terrain, coupled with the tunnel's darkness, presents both a thrilling challenge and an opportunity for speed. Notably, the course's reputation for helping runners secure Boston Marathon qualifying times is well-earned, with over 42% achieving this milestone. The Tunnel Light Marathon is a memorable blend of adventure and speed, perfect for those seeking personal records and Boston qualification.

Visiting North Bend, Washington, for the Tunnel Light Marathon provides a perfect opportunity to immerse yourself in the natural beauty and rich culture of this charming area. Situated just 30 miles east of Seattle, North Bend is easily accessible and offers a wealth of activities and sights to explore.

Discover the area's stunning landscapes with a visit to Rattlesnake Lake, where you can enjoy a picturesque sunset or hike the Rattlesnake Ledge Trail for breathtaking views of the Cascade Mountains. Nearby, the Twin Falls trail offers a serene hike with its cascading waterfalls and lush forest scenery. For a touch of local history, the Snoqualmie Valley Historical Museum provides fascinating insights into the region's past.

Culturally, North Bend shines with its vibrant arts scene. Catch a live performance at the Valley Center Stage Community Theater or enjoy a classic film at the historic North Bend Theatre. For music enthusiasts, Boxley’s Jazz Club offers an intimate venue to enjoy live jazz in a welcoming community setting. As you explore downtown, don't miss iconic spots like Twede’s Café and the local art at the Mountain View Art Gallery.

With its blend of outdoor adventure and cultural experiences, North Bend promises a memorable visit for marathon travelers and outdoor enthusiasts alike.