Jack & Jill Downhill Marathon, Half Marathon Washington

New Jack & Jill Course Update We’re excited to officially confirm the new Jack & Jill Marathon & Half Marathon course.

Thank you for your patience and trust while we worked to secure the best possible course for runners to enjoy and crush their goals.

The updated course keeps the fast, PR-friendly experience Jack & Jill is known for — with fresh scenery and an improved race-day flow.

Course Highlights • Point-to-point course • Net downhill: ~1,100 feet • Boston Qualifier eligible — no 5-minute downhill penalty • Run through the iconic tunnel • New scenic views including Lake Keecheles

Jack & Jill continues to be one of the fastest and most enjoyable marathon and half marathon experiences in the Pacific Northwest.

Race-Day Experience • Professionally timed by Laurell (formerly Brooksee) • Live tracking, mile splits, and printed finisher cards • Abbott World Marathon Majors Age Group Ranking — Tokyo 2027 • Our Super Pacers leading you to your best time

Looking for a different date? The Downhill Super Series now offers three weekends and three fast courses:

• Jack & Jill Marathon & Half — ~1,100’ net downhill • Super Hyak Marathon & Half — 1247’ net downhill • Cascade Express Marathon & Half — 1247’ net downhill

Choose the weekend that fits your race calendar best.

We can’t wait to welcome you to the new Jack & Jill course.

Visit the official race website for full race details, course maps, and race weekend information: Jack & Jill Marathon & Half