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The Jack & Jill’s Downhill Marathon & Half-Marathon offers runners a uniquely thrilling experience set against the spectacular scenery of the Pacific Northwest. Known for its gently sloping downhill course along the historic Palouse to Cascades State Park Trail, this marathon is ideal for achieving personal bests, qualifying for major marathons, or simply enjoying a scenic run.

As a Boston Qualifier for the marathon, Jack & Jill draws runners from across the country looking to set records and create unforgettable memories.

One of the highlights of the Jack & Jill Marathon is the iconic Snoqualmie Tunnel. Stretching over two miles, this historic tunnel gives marathon runners a one-of-a-kind experience as they start their journey through its cool, dark passage. Emerging from the tunnel, runners are greeted by beautiful mountain views, towering evergreens, and lush greenery. The trail’s natural shade and cool mountain air help keep runners comfortable, even in the summer months, adding to the appeal of the course.

With a strong legacy in the running community, the Jack & Jill Marathon has historically sold out, so we encourage early registration. We are committed to runner satisfaction, offering seamless logistics, enthusiastic support, and meticulous attention to detail.

Why Run Jack & Jill?

  • Boston & New York Qualifier: A perfect course for qualifying for the Boston or New York Marathons, with a gradual descent that supports fast, record-setting times.

  • Unique Tunnel Experience: Marathon runners start by running through the iconic Snoqualmie Tunnel, a thrilling and unforgettable 2-mile passage.

  • Natural Shade: The shaded course helps keep runners cool, making it an ideal race for summer conditions.

  • Stunning Scenery: Immerse yourself in the pristine landscapes of the Cascade Mountains and the Pacific Northwest, with stunning vistas and serene trails.

  • Runner-Centric Experience: With Run Super Series managing the event, you can expect a streamlined, enjoyable race with dedicated support and thoughtful details for an exceptional experience.

  • Abbot World Marathon Majors: Guaranteed entry into a world major with age categories.

Whether you’re chasing a PR, qualifying for a major marathon, or simply looking to enjoy an awe-inspiring run, the Jack & Jill’s Marathon delivers an unmatched blend of speed, scenery, and support to make it a race you won’t forget.

The Abbott World Marathon Majors (AbbottWMM) is a series of six of the largest and most renowned marathons in the world - Tokyo Marathon, B.A.A. Boston Marathon, TCS London Marathon, BMW BERLIN-MARATHON, Bank of America Chicago Marathon and TCS New York City Marathon. Jack & Jill’s Downhill Marathon is included on the list of World Marathon Majors series. Encompassing an annual series for elite runners and elite wheelchair athletes, AbbottWMM also applauds the achievements and passion of everyday champions from around the world. The AbbottWMM Seven Star System is an online results hub that celebrates every runner who has completed from one to seven of the races in the series.