Hyak Passage 25K
Hyak Passage 25K is a welcoming mountain trail race starting and finishing at Hyak Trailhead. Run 15.5 miles with approximately 1,800 feet of gain, pass through the completely dark 2.25-mile Snoqualmie Tunnel twice, and climb rooty, rocky singletrack to Annette Lake. Two staffed aid stations and 7.5 hours of course support. A headlamp is required. Registration includes aid-station support, drop-bag service, professional race photography, a post-race meal, and a finisher award. Formerly Rainshadow Running's Hyak Halloween 25K, the same tunnel-to-lake course continues under Cielo Running in 2026.
Date and Time
Saturday Oct 3, 2026
9:00 AM - 4:30 PM PDT
Bib pickup opens at 8:00 AM. Race starts at 9:00 AM. Course support continues through 4:30 PM.
Location
Hyak Trailhead, Palouse to Cascades State Park Trail, Snoqualmie Pass, WA 98068
Fees/Admission
$139 through September 14; $155 September 15 through October 2. No added registration-platform fee.
Contact Information
Cielo Running
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