Tunnel Vision Half Marathon

2026 Alternate Tunnel Half Marathon Course

Fast. Iconic. Unforgettable.

Choose your race day:

2026 Race Dates & Registration

Sunday, June 7, 2026
Light at the End of the Tunnel Half Marathon — Register HERE
Sunday, August 9, 2026
Tunnel Vision Half Marathon — Register HERE
Sunday, September 13, 2026
Tunnel Light Half Marathon — Register HERE

The Tunnel Half Marathon delivers one of the most unique and fastest half-marathon experiences in the Pacific Northwest.

Run Through History

Your race begins at Hyak Sno-Park and takes you through the legendary Snoqualmie Tunnel — over two miles of cool, dark adventure illuminated by your headlamp and the steady rhythm of runners chasing the light ahead.

Emerging from the tunnel, you’ll descend along the scenic Palouse to Cascades Trail, surrounded by towering evergreens, mountain views, waterfalls, and crisp Washington air.

Built for Speed

Approximately 1,000 feet of net downhill
Smooth, packed gravel surface (great for road or light trail shoes)
Point-to-point course finishing at Garcia Trailhead

This is a course designed for strong finishes, personal bests, and unforgettable race memories.

The 2026 Half Marathon course will be USATF-certified (certification scheduled following snowmelt in May).

What’s Included

Your registration includes:

Professional chip timing
Custom race bib
Custom finisher’s shirt
Custom finisher’s medal
Post-race food and festivities
Shuttle transportation back to Hyak Sno-Park

Shuttle & Finish Experience

After crossing the finish line at Garcia Trailhead, runners will enjoy a scenic one-mile walk down Forest Service Road 9020 to the shuttle buses — the perfect post-race shakeout.

Shuttles will transport runners back to Hyak Sno-Park for celebration and refreshments.

What to Know

Headlamps are required for the Snoqualmie Tunnel.
The course surface is packed gravel.
Aid stations are positioned approximately every 2–3 miles with water, electrolytes, first aid, and Honey Stinger gels at select locations.

Half Marathon Aid Stations

Aid stations are located approximately every 2–3 miles:

Mile 2.6 – Tunnel Exit: Water, electrolytes, first aid (headlamp drop)
Mile 5.3 – Humpback: Water, electrolytes, first aid, Honey Stinger gels
Mile 8.0 – Bandera: Water, electrolytes, first aid
Mile 10.7 – Rock Creek: Water, electrolytes, first aid, Honey Stinger gels

Half Marathon Course Map

View the official Caltopo course map HERE.