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A fast, downhill marathon on the Palouse to Cascades State Park Trail, featuring a unique 2.4-mile passage through the dark Snoqualmie Tunnel and a significant net elevation drop.
Course Highlights
The Tunnel Vision Marathon offers a truly unique racing experience, highlighted by its 2.4-mile journey through the historic Snoqualmie Tunnel. This dark, cool passage requires runners to use headlamps, creating an unforgettable atmosphere as they traverse the Cascades from the inside out. Emerging from the tunnel, participants are greeted by breathtaking views of the surrounding mountains, lush evergreen forests, and cascading waterfalls. The 2026 course, while modified due to storm damage, remains a fast, scenic route that starts at the Hyak Sno-Park and follows an out-and-back segment before heading through the tunnel toward the Garcia Trailhead. The point-to-point layout provides a consistent downhill grade, allowing runners to maintain a fast pace while taking in the fresh mountain air and the natural beauty of the Pacific Northwest.
Race Details
As a USATF-certified Boston Qualifier, the Tunnel Vision Marathon is meticulously organized to support high-performance running. The course follows a former railway bed consisting of well-packed gravel, which is smooth and stable enough for traditional road racing shoes, though some participants prefer light trail shoes for extra grip. For 2026, the event features a net elevation drop of approximately 1,000 feet, making it one of the fastest marathons in the United States. Runners can expect nine well-stocked aid stations located roughly every 2.5 miles, providing water, Tailwind electrolyte drink, and Honey Stinger gels at designated points. The race implements a strict six-hour time limit, with an early start option available for those who need additional time. Comprehensive course support includes Search & Rescue personnel, on-course volunteers, and medical staff at the finish line to ensure a safe and professional experience for all participants.
Why Runners Love It
Runners flock to the Tunnel Vision Marathon for its incredible PR potential and its reputation as a “Boston Qualifier factory.” The combination of the significant downhill assist and the cool, oxygen-rich mountain air makes it an ideal choice for those looking to set a personal record or secure a spot in the Boston Marathon. Beyond the speed, the event is cherished for its intimate, community-focused feel and its stunning scenery. The “Light at the End of the Tunnel” is more than just a name; it’s a symbolic and literal highlight of the race that provides a sense of accomplishment unlike any other event. The race is part of a series of marathons organized by Brian and Susan Pendleton, who have spent over 13 years refining the experience to provide a “runner-first” atmosphere. With efficient shuttle logistics, a beautiful finisher medal, and the camaraderie of fellow runners in the tunnel, it remains a bucket-list race for marathoners across the globe.
At a Glance
- Location: North Bend, WA — United States
- Next Date: 2026-08-09
- Distances: Marathon, Half Marathon
- Start Time: 07:00
Register & Learn More
Visit the official race website for entry details, course maps, and registration: https://www.tunnelmarathon.com/
North Bend, WA 98068 United States
A fast, downhill marathon on the Palouse to Cascades State Park Trail, featuring a unique 2.4-mile passage through the dark Snoqualmie Tunnel and a significant net elevation drop.
Course Highlights
The Tunnel Vision Marathon offers a truly unique racing experience, highlighted by its 2.4-mile journey through the historic Snoqualmie Tunnel. This dark, cool passage requires runners to use headlamps, creating an unforgettable atmosphere as they traverse the Cascades from the inside out. Emerging from the tunnel, participants are greeted by breathtaking views of the surrounding mountains, lush evergreen forests, and cascading waterfalls. The 2026 course, while modified due to storm damage, remains a fast, scenic route that starts at the Hyak Sno-Park and follows an out-and-back segment before heading through the tunnel toward the Garcia Trailhead. The point-to-point layout provides a consistent downhill grade, allowing runners to maintain a fast pace while taking in the fresh mountain air and the natural beauty of the Pacific Northwest.
Race Details
As a USATF-certified Boston Qualifier, the Tunnel Vision Marathon is meticulously organized to support high-performance running. The course follows a former railway bed consisting of well-packed gravel, which is smooth and stable enough for traditional road racing shoes, though some participants prefer light trail shoes for extra grip. For 2026, the event features a net elevation drop of approximately 1,000 feet, making it one of the fastest marathons in the United States. Runners can expect nine well-stocked aid stations located roughly every 2.5 miles, providing water, Tailwind electrolyte drink, and Honey Stinger gels at designated points. The race implements a strict six-hour time limit, with an early start option available for those who need additional time. Comprehensive course support includes Search & Rescue personnel, on-course volunteers, and medical staff at the finish line to ensure a safe and professional experience for all participants.
Why Runners Love It
Runners flock to the Tunnel Vision Marathon for its incredible PR potential and its reputation as a “Boston Qualifier factory.” The combination of the significant downhill assist and the cool, oxygen-rich mountain air makes it an ideal choice for those looking to set a personal record or secure a spot in the Boston Marathon. Beyond the speed, the event is cherished for its intimate, community-focused feel and its stunning scenery. The “Light at the End of the Tunnel” is more than just a name; it’s a symbolic and literal highlight of the race that provides a sense of accomplishment unlike any other event. The race is part of a series of marathons organized by Brian and Susan Pendleton, who have spent over 13 years refining the experience to provide a “runner-first” atmosphere. With efficient shuttle logistics, a beautiful finisher medal, and the camaraderie of fellow runners in the tunnel, it remains a bucket-list race for marathoners across the globe.
At a Glance
- Location: North Bend, WA — United States
- Next Date: 2026-08-09
- Distances: Marathon, Half Marathon
- Start Time: 07:00
Register & Learn More
Visit the official race website for entry details, course maps, and registration: https://www.tunnelmarathon.com/