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Annual MI Half Marathon: March 18

Feb 20, 2018 - The 46th annual Mercer Island Half Marathon organized by the Rotary Club hits the streets and trails of Mercer Island on Sunday, March 18, 2018. This will result in temporary road closures and some traffic delays. Five different run or walk events benefiting colon cancer awareness will take place throughout the morning. 
Mercer Island Police, Rotary course marshals, and volunteers will provide traffic control throughout the day. Signs will clearly denote detours and areas of temporary traffic delays. Bicyclists and drivers are asked to comply with requests made by race officials. If you must use East, West, or North Mercer Way, please travel in a counterclockwise direction to minimize delays. Residents are advised to use Island Crest Way for North/South travel, if at all possible.
Events begin at 7:30am and ends at approximately Noon; click here for more schedule information.
Click here for course maps.
Click here for special travel advice for cyclists.
Learn more at: ​


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