Hyak Passage 25K
Run through the Snoqualmie Tunnel, climb forested singletrack to Annette Lake, and retrace the route back to Hyak.
October 3, 2026 · Snoqualmie Pass, Washington
Distance
15.5
miles
1,800 feet of gain · 2 tunnel passages.
2 staffed aid stations · 7.5 hours of course support.
Regular entry
$139
Through September 14
Your entry includes
Late entry
Sep 15 – Oct 2
$155
No added registration-platform fee.
The course
Miles 0–4.25 · Wide gravel
Start at Hyak Trailhead and enter the 2.25-mile Snoqualmie Tunnel. Completed in 1915 as a railroad passage through the Cascades, it has no natural light. Emerge onto the wide, smooth gravel of the Palouse to Cascades Trail and continue to the Annette Lake junction.
Miles 4.25–10.5 · Rooty, rocky single track
Leave the gravel and climb through forest on the Annette Lake Trail. Reach the lake, descend to the Annette Lake Trailhead, and prepare for the return.
Miles 10.5–15.5 · Single track and gravel
Return uphill to the course-marshal junction around mile 10.7, rejoin the Palouse to Cascades Trail, retrace the runnable gravel, and pass through the tunnel a second time to the finish.
Race day
Saturday, October 3
All times Pacific
On course
Shared provisions
Both stations serve PB&J sandwiches, fruit, snacks, and plain water, plus Open Fuel Endurance Drink Mix. First-aid supplies are available.
Volunteers hike supplies 3.5 miles to this station to support you and cheer you on.
This is the only crew-access and drop-bag point. Leave by the 2:30 PM cutoff to receive an official finish, even if you reach Hyak after the 4:30 PM finish-line cutoff.
Partners
Before race day
The race starts and finishes at Hyak Trailhead on the Palouse to Cascades Trail. Take I-90 to Exit 54 and follow event signs. A Washington Discover Pass is required: $10 for the day or $45 annually.
A headlamp is mandatory for both tunnel passages. Hyak Passage is cupless, so bring your own bottle, flask, or reusable cup. Carry enough hydration and nutrition for your effort, plus layers for variable October mountain weather.
Parking is limited and requires a valid Northwest Forest, Interagency, or U.S. Forest Service day pass; the Discover Pass is not valid there.
If you drop from the race, notify the Aid Station Captain before leaving so the race team can account for you.
Yellow and black arrows mark junctions. Pink and black checkered confidence ribbons appear between them. Wear your bib visibly on the front of your body for timing and participant check-ins.
Vegetarian and meat tamales will be served after the race, with coffee, kombucha, water, and electrolytes. No alcohol will be served.
Entries are nonrefundable and cannot be transferred to another runner. Timely withdrawals may qualify for partial credit toward a future Cielo Running race. Pregnancy deferrals and event-cancellation terms are covered in the full policy.
Costumes are welcome when they are safe to race in, culturally respectful, and non-gory. Follow staff directions, respect other trail users, and stay on the marked course.
The Snoqualmie Tribe asks visitors to recreate in moderation, stay on designated trails, and support stewardship and education efforts. We are guests here.
About 17 miles east
Drive-in tent and RV camping with drinking water, restrooms, and showers. Sites 1–93 are scheduled to remain open through October 31. Reservations are recommended.
Nearest primitive option
Three to four first-come, first-served sites on the Palouse to Cascades Trail east of Hyak. Access is by foot or bicycle only; each campground has a picnic table and vault toilet.
About 30 miles east
A year-round private campground in Cle Elum with classic tent camping and full-hookup RV sites. Reserve directly with the campground.
Hyak Passage 2025 photos on this page by Somer Runner.
Hyak Passage 25K
October 3, 2026 · Snoqualmie Pass, Washington
No added registration-platform fee.
