Tunnel Light Marathon
North Bend, United States • 13 Sep 2026
Tunnel Light Marathon & Half Marathon - September 13, 2026
The Tunnel Light event is a marathon and a half marathon near Hyak at Snoqualmie Pass, North Bend, Washington. The course includes a run through the historic Snoqualmie Tunnel and long sections of downhill rail-trail with Pacific Northwest scenery.
For 2026 the event follows an alternate, fully permitted route due to storm damage. The revised course remains USATF certified and the marathon is a Boston qualifier. Both distances feature approximately 1,000 feet of net elevation drop and a smooth, packed gravel surface that works well with road or light trail shoes.
Distances
- Marathon
- Half Marathon
Race services include professional chip timing, custom race bibs, a finisher shirt and medal, post-race food, and shuttle transportation back to Hyak Sno-Park. The finish area at Garcia Trailhead requires a scenic one-mile walk down Forest Service Road 9020 to shuttle buses.
Additional practical notes: headlamps are required for passage through the Snoqualmie Tunnel; aid stations are provided every 2 to 3 miles with water, electrolytes, basic first aid, and Honey Stinger gels at select locations. Registration opens February 13, 2026 and closes September 6, 2026 at 11:59 PM PT. Visit the organization's website for the most recent information.