Logo for Jack & Jill's Downhill Marathon and Half Marathon featuring a stylized green pine tree and text in white and gray.


The Fastest BQ & PR Weekend in the PNW

July 25 & 26

Point-to-Point Course • 1,300’ Net Downhill • No BQ Penalty

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Fast Courses Built for BQs & PRs

Run through the iconic Snoqualmie Tunnel, enjoy stunning scenery including Lake Kachess, and chase your BQ or PR on one of the fastest downhill marathon courses on the West Coast — from Snoqualmie Pass at Hyak to the finish in North Bend, Washington.

Why Runners Choose Jack & Jill

  • Boston Qualifier Eligible
    Run a fast, net-downhill course with no Boston downhill penalty.

  • Abbott World Marathon Majors Age Group Awards Qualifier
    Jack & Jill is an official qualifying race for the Abbott World Marathon Majors Age Group World Championships.

  • Fast Net Downhill Course
    Enjoy 1,300 feet of net downhill on smooth trail designed for PRs and strong finishes.

  • Run the Snoqualmie Tunnel
    Experience one of the most iconic and memorable marathon segments in the Pacific Northwest.

  • Point-to-Point Race Experience
    No loops. No repeats. Just a beautiful start-to-finish journey.

  • Professional Race Production
    Timed by Laurell (formerly Brooksee) with live tracking, mile splits, and printed finisher cards.

  • Super Pacers
    Our experienced pacing team helps runners hit goal times from start to finish.

  • Recognized as One of the Fastest Marathons in the U.S.
    Featured by HalfMarathons.net among the fastest marathons in the country for runners chasing PRs and Boston Qualifiers.

Jack & Jill Marathon & Half – Our Best Course Yet

Same Fast Jack & Jill Experience.

After extensive planning and collaboration, we secured an updated Jack & Jill course designed to preserve everything runners love about this iconic race — a fast net-downhill, point-to-point experience through the Snoqualmie Tunnel, now featuring beautiful new scenery including Lake Kachess.

Jack & Jill's Downhill Marathon & Half is a 2-Day Event

You can race Saturday, Sunday, or make it a double.
Both the full and half marathon occur on both days.
USATF certified and Boston qualifiers.
This is the second event of our 3-race Downhill Super Series

Three Weekends. Three Fast Courses.
Pick the date that fits your training schedule.

  • Jack & Jill's Marathon & Half

    Snoqualmie Pass
    July 25 & 26

    This marathon is a fast, scenic course with a gentle 1,300-foot drop over 26.2 miles, ideal for setting a Boston-qualifying time, with no penalty, or new PR.

    View Jack & Jill

  • Super Hyak Marathon & Half

    Snoqualmie Pass, WA
    June 13

    Under 1,500’ Net Downhill
    Fast Mountain Course
    Cool Temps & Scenic Views
    Boston Qualifier, No penalty

    View Super Hyak

  • Cascade Express Marathon & Half

    Snoqualmie Pass, WA
    September 12

    Under 1,500’ Net Downhill
    Late-Summer BQ Opportunity
    Smooth, Fast Course

    View Cascade Express