2026 Race Dates
(registration will open on February 13, 2026)
June 7th, August 9th, and September 13th, 2026
2026 Course Update Due to storm damage, the 2026 events will follow an alternate, fully permitted route. Approximately 1,000 feet of net downhill (marathon & half) USATF-certified courses (certification finalized after snowmelt in May) Marathon remains a Boston Qualifier While the finish location differs from the traditional route, the spirit of the Tunnel Marathons remains unchanged — a smooth downhill rail trail, stunning Pacific Northwest scenery, and the unforgettable run through the Snoqualmie Tunnel.
Image with text
Pair large text with an image to give focus to your chosen product, collection, or blog post. Add details on availability, style, or even provide a review.
Use HTML to format your text so it can be easily read.
This text can be used to share information about your brand with customers.Image with text
Pair large text with an image to give focus to your chosen product, collection, or blog post. Add details on availability, style, or even provide a review.
Image with text
Pair large text with an image to give focus to your chosen product, collection, or blog post. Add details on availability, style, or even provide a review.
Use HTML to format your text so it can be easily read.
This text can be used to share information about your brand with customers.
2026 Race Dates (registration will open on February 13, 2026)
June 7th, August 9th,
and September 13th, 2026
2026 Course Update
Due to storm damage, the 2026 events will follow an alternate, fully permitted route.
Approximately 1,000 feet of net downhill (marathon & half)
USATF-certified courses (certification finalized after snowmelt in May)
Marathon remains a Boston Qualifier
While the finish location differs from the traditional route, the spirit of the Tunnel Marathons remains unchanged — a smooth downhill rail trail, stunning Pacific Northwest scenery, and the unforgettable run through the Snoqualmie Tunnel.
A Proven Boston Qualifier
The original marathon course ranked Top 10 nationwide for Boston Qualifiers (Runner’s World & RaceRaves) and has helped over 42% of participants earn a BQ.
Original Course Records:
Male: Grant Martin (2024) – 2:25:01
Female: Chelsea Barr (2022) – 2:42:46
Founded in 2007 by Washington resident Brian Pendleton, the Tunnel Marathon continues to be a destination race runners return to year after year.
Built for Speed
Consistent downhill profile
Smooth, packed gravel surface (ideal for road or light trail shoes)
Aid stations every 2–3 miles
Headlamps required for the Snoqualmie Tunnel
Registration includes professional chip timing, custom bib, finisher’s shirt and medal, post-race food and festivities, and shuttle transportation back to Hyak Sno-Park.
After finishing at Garcia Trailhead, runners enjoy a scenic one-mile walk to the shuttle buses before returning to Hyak for celebration.
2026 Race Dates – Snoqualmie Pass to North Bend, WA
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
Ready to run?
Come run fast. Come run iconic. Come find your light at the end of the tunnel.
Use HTML to format your text so it can be easily read.
This text can be used to share information about your brand with customers.Image with text
Pair large text with an image to give focus to your chosen product, collection, or blog post. Add details on availability, style, or even provide a review.
Race Reviews
Trish LaliberteGorgeous trail with great mountain views. Awesome volunteers and yummy food. Loved the ice bath afterwards awwww. Highly recommended especially if you want to PR or BQ.....fast downhill coarse.
P.A.I beat my last marathon by 20 MIN! This truly is a great course for a PR and a BQ attempt.
Edward GuelfiAmazing race. Beautiful course with awesome volunteers. I got a pr and a BQ.
Rocky ChristenberryBeautiful run and wonderful experience even running in the rain! would definitely do again!
Helen MillsJust ran my first Tunnel Marathon and had a fabulous experience (plus a 20 min PR and a BQ!). Well organized, great route. Loved the finish line! Loved the cold water tank and the massages!
Image with text
Pair large text with an image to give focus to your chosen product, collection, or blog post. Add details on availability, style, or even provide a review.
USATF Course Certification # WA21010RMB