Mercer Island Marathons Events

Marathons Events Happening Next in Mercer Island, WA

20th Annual Sickle Cell Walk

 Seward Park The Loop 6 Sep 2025
NONPROFIT

Run Scared 2025

 Seward Park 26 Oct 2025
SPORTS

Run the Loop, Feed the People!

 Seward Park The Loop 23 Aug 2025