Runners head to Snoqualmie Pass, Washington, for a distinctive series of events, including the 'Light at the End of the Tunnel Marathon,' 'Tunnel Vision Marathon,' and 'Tunnel Light Marathon.' Each race in the series aims to provide a marathon race day experience for its 500 to 1,000 participants.
For 2026, the event will follow an alternate, permitted route, necessitated by storm damage to sections of the original Tunnel Marathon course. Despite this necessary change, participants can still expect a memorable journey through the unique terrain, culminating in a custom finisher medal.