Run Super Downhill Series | Jack & Jill Half Marathon
Fast, scenic, and Boston-qualifying
Overview
The Jack & Jill’s Downhill Marathon and Half Marathon are top-rated for good reason: runners experience a gradual 2,000-foot descent along the historic Palouse to Cascades Trail, starting in a 2-mile tunnel and finishing surrounded by the beauty of the Cascade Mountains. With both races USATF-certified and boasting some of the highest Boston Qualifier rates in the country, it’s a must-run for those chasing a PR or a major marathon entry. The event is held across two days, with options to run either day or both.
Course
Marathon starts with a 2-mile stretch through the Snoqualmie Tunnel
Gradual net elevation loss of 2,000+ ft over 26.2 miles
Surfaces include hard-packed dirt and gravel
Shaded trail keeps runners cool even in summer
Scenic views of Keechelus Lake and surrounding forest
Ideal for road shoes; trail shoes not required
Aid stations every ~2.5 miles with water, Gatorade, and GU gels
Search and Rescue medical teams roam the course
Portable toilets available along the route
Logistics
Swag & Medals
USATF-certified course and Boston Qualifier
Live tracking via text/email
Shuttle transport for half marathon and finishers
Drop bag service
Scenic and shaded trail with Snoqualmie Tunnel start
Aid stations with hydration and fuel
Pace groups for both distances
Race shirt and finisher swag
Support from experienced volunteers and organizers
Abbott World Marathon Majors recognition
Getting There
Marathon runners park at Hyak Sno-Park ($10 Discovery Pass required)
Half Marathon runners park at North Bend Premium Outlets and are shuttled to the start
No parking at trailhead or finish
Marathon: self-transport to start; return shuttle available
Half Marathon: shuttle from outlet, 1-mile walk to start
Designated return shuttle to parking locations starts at 9:30 AM
Bring flashlight for tunnel section
Race day packet pickup available
Driving Directions
Policies
Race Policies
No refunds, deferrals, or bib transfers
Bib pickup requires ID (no picking up for others)
Runners must drop off their headlamp post-tunnel
Gear check provided (not for valuables)
Safety is prioritized — stay on course, follow pace group start waves
Race is USATF sanctioned
Land Acknowledgement
We acknowledge that we are on the ancestral and unceded lands of the Snoqualmie Indian Tribe, part of the Southern Coast Salish peoples, whose traditional territory includes the Snoqualmie River Valley and area now known as North Bend.
About Run Super Series
Run Super Series is a dynamic and community-driven race organizer based in Washington State, offering one of the most diverse and exciting collections of road and trail running events in the Pacific Northwest. From accessible 5Ks to challenging 100-mile ultras, this race series is designed by runners, for runners, delivering memorable experiences that blend scenic courses, thoughtful race support, and signature personal touches.
Their events span iconic locations across Washington, including Seattle, North Bend, University Place, Everett, and Quincy. Participants can expect breathtaking backdrops—from Lake Union and the Snoqualmie Tunnel to the golden hills of the Washington desert and the dramatic views of Chambers Bay. Whether it’s a fast Boston-qualifier marathon, a women’s empowerment run, a scenic ultra in the Cascades, or a fun summer evening 5K, every race in the Run Super Series is crafted with care and intention.
Runners consistently praise Run Super Series events for being well-organized, scenic, and inspiring. Testimonials highlight their life-changing impact, exceptional support, and the opportunity to explore the beauty of the Pacific Northwest on foot. Whether you're chasing a PR, discovering a new trail, or running with friends for fun, Run Super Series promises to deliver your next favorite running experience.
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Disclaimer
We make every effort to provide accurate and up-to-date information on Kåduka, but details may change. Please always confirm the latest information on the official race website. See something that needs correcting? Send us a note at [email protected]