Tunnel Light Marathon
Race Day Weather
Comfortable conditions, gradual warm-up
Runners will face temperatures starting at 54°F and climbing to 72°F, with average humidity at 70%. The light wind from the WSW will be a non-factor throughout the race. Athletes should start conservatively and adjust their pace as temperatures rise, ensuring adequate hydration as the race progresses.
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Race Info
The Tunnel Light Marathon runs point-to-point from the Hyak Sno-Park Trailhead near Snoqualmie Pass to the Garcia Trailhead in North Bend, Washington, on the historic John Wayne Pioneer Trail rail bed. Runners pass through the roughly 2.3-mile Snoqualmie Tunnel after the halfway point; the tunnel is unlit, so headlamps are required. Storm damage to the original course means the 2026 race follows a permitted detour with about 1,000 feet of net downhill, less than the race's usual net drop of around 2,000 feet. The course is USATF-certified and a Boston Marathon qualifier. It is one of three races the organizer runs on the same corridor each year, alongside the Light at the End of the Tunnel Marathon in June and the Tunnel Vision Marathon in August.
