Jack & Jill Marathon & Half
Typically 52–75°F · low rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
55–72°F
dry
2024
50–69°F
dry
2023
51–64°F
rain
2022
49–82°F
dry
2021
51–79°F
dry
2020
49–59°F
dry
2019
47–63°F
rain
2018
54–81°F
dry
2017
47–78°F
dry
2016
47–76°F
dry
Best months to race in Washington →
About this race
• Ranked #35 Fastest Marathon in the U.S. (FindMyMarathon)
• 1 in 5 runners BQ
• ~1,000 feet of net downhill with NO Boston Qualifier time penalty
• Smooth, fast rail-trail surface built for negative splits
• Jack & Jill has sent thousands of runners to Boston
• Iconic Snoqualmie Tunnel experience
• Abbott World Marathon Majors Age Group World Rankings Qualifier
• Professionally timed with live tracking, detailed results, and printed results cards
• Super Pacers for key Boston Qualifying times
Over a decade of experience delivering one of the fastest and most trusted downhill races in the country.
What Runners Are Saying
"BQ and PR!! Boston 2026 here I come💙🦄💛 Jack and Jill was my race to get a larger buffer"- Carolyn
"BQ last July at Jack and Jill, Boston 2026 here I come! I love running this course, I would run it just for the peace and tranquility the course provides. P.S. - I love the tunnel, part of the experience" - Jon
"The finish line was awesome! They announce your name and let you know if you qualified for Boston. The crowd was amazing at the finish. And yes, I rang that PR bell with Pride! Would I run this marathon again? Absolutely!" - Annie|
"10 min PR from my Boston Time, so it was very successful! Was a really fun race and loved the finish line!! Such a great atmosphere!"
Course map
Train with a club
Run clubs near Snoqualmie Pass to train with before race day.
Suggested Races
Organize this race?
Claim it free to manage your listing — and get it featured for free, while spots last.