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Race Dates

2018: Sunday, July 29, 2018
2017: Sunday, July 30, 2017

Course Information

Profile: Downhill
Type: Point to Point
Surface: Trail
Certified?: Yes

Race Day Weather

Mean Temp.: 67°F (19°C)
Average High: 77°F (25°C)
Average Low: 57° F (13°C)

Historical Weather

PR Score & Course Score

PR Score: 104.32
Course Score: 105.10

Race Size

2017: 572 Finishers
2016: 569 Finishers
2015: 237 Finishers

BQ Percentages

2018: N/A
2017: 23.3%
2016: 18.1%

Miscellaneous Information

Pace Groups?: No

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Course Description

The Jack & Jill's Downhill Marathon course drops approximately 2,000 feet from the start just before the Snoqualmie Tunnel to the finish in North Bend, Washington.

The course is mostly on the the dirt/gravel Iron Horse and Snoqualnie Valley Trails.

Less than a mile from the start runners will travel over two miles through the Snoqualmie Tunnel.

The race features both a Saturday and Sunday marathon.

Marathon Rankings

The Jack and Jills Downhill Marathon was the 121st largest marathon in the U.S. last year and was the 127th largest in 2016.

Last year 23.3% of finishers qualified for the Boston Marathon and 18.1% of runners qualified for Boston in 2016.

This gives the Jack and Jills Downhill Marathon the 38th highest percentage of Boston Marathon qualifiers in the U.S. last year and the 54th highest percentage in 2016.

Its Course Score of 105.10 ranks it as the 4th fastest marathon course in the U.S. and the 1st fastest course in Washington.

The typical race time temperature and humidity levels are slightly above the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Jack and Jills Downhill Marathon a PR Score of 104.32. This PR Score ranks it as the 6th fastest marathon in the U.S. and the 1st fastest in Washington.

Learn more about PR Scores and Course Scores on the FAQ page.

Elevation Chart

Max Elevation: 2603 feet (793m)
Min Elevation: 521 feet (158m)


Recent Jack and Jills Downhill Marathon Reviews

5 Stars from 2 Reviews
View all Reviews

review of 2017 Jack and Jills Downhill Marathon.   

5 / 5 Stars


Loved the course but I do recommend you train trail or at the least dirt roads. Its a different feel than street or road running. The scenery and temperatures were great. Don't plan on anything fancy for race support. Its trail and its small, less than 600 full marathoners.

Race Tips

Train on some trails or dirt road. We still did most our training on the street but at least once and sometimes twice we did dirt roads. Highly recommend that. Also carry your own water. Water stations every three miles in the first half felt a little long to me.

Logistical Tips (Hotels, Restaurants, Parking, Discounts, etc.)

We stayed in downtown Bellevue which was beautiful with lots of restaurants and grocery store within walking distance. It was 20 minutes to drive to shuttle pick up and end of the race.

review of 2017 Jack and Jills Downhill Marathon.   

5 / 5 Stars


Beautiful course, ideal weather, slight downhill, perfect course to crush a PR or get your BQ.

Race Tips

It's a hard packed gravel path so wear sturdy sneakers and be aware there is a 2 mile tunnel so you need a flashlight.

Logistical Tips (Hotels, Restaurants, Parking, Discounts, etc.)

Logistics are well organized. I stayed in downtown Seattle and it was only a half hour away.

Finish Time Equivalent

If you ran the Jack and Jills Downhill Marathon in 3:40:00, what would your time in the Boston Marathon be?

See how your race times would compare on other marathon courses using the Marathon Time Converter Tool.