Lake Union 10K

Sun August 15, 2021 Seattle, WA 98109 US Directions

Lake Union 10K 2021

$45 7:30AM PDT - 10:00AM PDT Registration ends August 13, 2021 at 11:59pm PDT

Lake Union 10K Virtual

$35 Registration ends August 13, 2021 at 11:59pm PDT

Join Portage Bay for the 12th running of the Lake Union 10K run or walk along the Cheshiahud Lake Union Loop Trail. 

Portage Bay Post-Race Breakfast
Great Seattle and Lake Union Views
Fully Supported 10K Course

New virtual option this year! Not comfortable with signing up for an in-person event? We will send you your race packet (bib, shirt and other swag) and you can run or walk on your own schedule, in your own neighborhood on August 15th. Post pictures and results here. 

Thank you to Portage Bay for sponsoring the 12th annual Lake Union 10K! Please visit their website

Lake Union 10K Benefits Girls on the Run of Puget Sound. Girls on the Run of Puget Sound is a non-profit organization that inspires girls to be joyful, healthy and confident using a fun-experienced based curriculum which creatively integrates running. 


In an effort to promote health of our participants, the Lake Union 10K does not issue refunds in cases of severe weather or smoke. If we are forced to cancel the event due to unsafe running conditions our goal is to reschedule the date of the race. If this is not possible we intend to host a virtual event and mail participants their race packets.

860 Terry Ave N
Seattle, WA US 98109
Race Website

Additional race information can be found at

Race Contact Info

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