Defeat Myeloma 5K

Seattle, Washington, United States

Jun 28, 2026 - Sunday

1mi, 5k

Race Information

Join survivors and patients of Multiple Myeloma for a family-friendly 5K run or 1-mile walk. Flat, fast course with views of the water and Mt. Rainier. Music and great food at the finish line and tech shirts. 100% of the proceeds benefit Fred Hutch Cancer Research Center’s immunotherapy research.

RunGuides Pick of the Month: Downhill Super Series πŸͺ½

3 of the Fastest Boston Qualifier Courses in the U.S.
#22 Fastest | #35 Fastest | #5 Fastest πŸ‡ΊπŸ‡Έ

Boston Marathon qualifying eligible with no downhill penalty! Marathon and half marathon distances un through the iconic Snoqualmie Tunnel. 

πŸ’Έ SAVE 10% | Choose Your Event | Use Code: RG10

πŸͺ½ Super Hyak Marathon & Half - June 13th
🌲 Jack & Jill Marathon & Half - July 25 & 26th
⛰️ Cascade Express Marathon & Half - Sept. 12th

These smooth rail-trail courses feature sustained net downhill profiles designed to help runners chase personal bests and Boston Qualifying times. Located along the Palouse to Cascades Trail, this historic rail tunnel offers cool temperatures and a unique running experience before the course continues downhill toward the finish.

Get Series Info

 

Get a Training Plan for this Run

Receive 2 FREE Weeks of personalised run training from our friends at Runna

The Runna app, the ultimate running coach in your pocket, gives you personalised programs that sync with your favourite devices, includes strength and mobility training, and offers complete support.

You get 2 weeks for free!

Learn more about Runna. Click the link below.

Check Out Runna

Race Facts

Race Size: 500 - 1,000

Elevation: Fast and Flat

Course Type: Road

Boston Qualifier: No

Kids Run: Yes

Where to Stay

Use this map to find hotels and airbnb accommodation near this race location.