In 4 days · Sun, Sep 13, 2026
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Sunday, September 13th, 2026
NF-906, Hyak Dr E, Snoqualmie Pass WA
Marathon · Half
49–66°F · some rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
49–73°F
dry
2024
49–62°F
dry
2023
50–64°F
dry
2022
52–66°F
dry
2021
45–58°F
dry
2020
47–80°F
dry
2019
51–60°F
rain
2018
42–56°F
dry
2017
48–60°F
dry
2016
43–68°F
dry
Best months to race in Washington →
Race-day forecast · Sunday, Sep 13
Sunny · 44–68°F
Sunday, Sep 13starts near 44°F · 21% chance of rain · wind up to 6 mph
About this race
Tunnel Light Marathon & Half
Date: September 13, 2026
Location: NF-906, Hyak Dr E, Snoqualmie Pass, WA
Race URL: Tunnel Light Marathon & Half
Race Overview
Tunnel Marathon & Half Marathon-Fast. Scenic. Boston Built. Iconic. Unforgettable.
- Fast Course: The Tunnel Marathons deliver one of the fastest marathon & half marathon experiences in the country.
- Steady Downhill: With a steady downhill grade and low starting elevation, this course is engineered for speed.
- Scenic Experience: Breathtaking moments from the historic Snoqualmie Tunnel to stunning mountain views.
- Unique Opportunity: Ideal opportunity to set a Personal Record, earn a Boston Qualification (marathon), or run your first race.
2026 Course Update
Due to severe storm damage, the 2026 event will follow an alternate, fully permitted route.
- Fast and Scenic: The course will remain fast and scenic.
- Net Elevation Drop: Features approximately 1,000 feet of net elevation drop (marathon & Half).
- USATF Certified: The marathon is a Boston Qualifier.
- Unchanged Spirit: The spirit of the Tunnel Marathons remains with a smooth downhill rail trail.
Boston Qualifier
The original marathon course ranked in the Top 10 nationwide for Boston Qualifiers and has helped more than 42% of participants earn a BQ.
- Professional Organization: Expect the same professional organization and safety standards.
- Fast Course Design: The Tunnel experience is characterized by a fast course design.
- Run Iconic: Come run fast, iconic, and find your light at the end of the tunnel.
- Three Race Options: Choose your day for one of three race events.
Race Dates
- June 7, 2026: Light at the End of the Tunnel Marathon & Half
- August 9, 2026: Tunnel Vision Marathon & Half
- September 13, 2026: Tunnel Light Marathon & Half
Course Details
- Net Downhill: Approximately 1,000 feet of net downhill.
- Surface Quality: Smooth, packed gravel surface (road or light trail shoes work well).
Registration Includes
- Timing: Professional chip timing.
- Custom Bib: Custom race bib for all participants.
- Finisher’s Gear: Finisher’s shirt and medal.
- Post-Race Festivities: Post-race food and festivities with shuttle transportation back to Hyak Sno-Park.
Shuttle & Finish
After finishing at Garcia Trailhead, runners will enjoy a scenic one-mile walk down Forest Service Road 9020 to the shuttle buses. Shuttles return participants to Hyak for celebration and refreshments.
What to Know
- Headlamps Required: Headlamps are required for the Snoqualmie Tunnel.
- Course Surface: Course surface is packed gravel.
- Aid Stations: Aid stations every 2–3 miles with water, electrolytes, first aid, and Honey Stinger gels at select locations.
Course map
Hotels for race weekend
Live prices near the start line, Sep 12 – 14, 2026.
Train with a club
Run clubs near Snoqualmie Pass to train with before race day.
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