Running races in or near Mercer Island, WA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Mercer Island, WA area. Races listed here include both walking and running events of various distances — from 1-milers, to 5Ks, to marathons, and everything else in between.
Beat the Bear Santa Bear - Sponsor this ...
Organization: Sammamish Running
Date of Race: 12-14-2024
Description: Join us for the 6th Annual Santa Bear Run along the ...
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Beat the Bear Santa Bear - Santa Bear ...
Organization: Sammamish Running
Date of Race: 12-14-2024
Description: Join us for the 6th Annual Santa Bear Run along the ...
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Cedar River Half 13.1 - Individual Age group/open
Organization: Sammamish Running
Date of Race: 01-25-2025
Description: Out and back along the Cedar River Trail starting out at ...
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Beat the Bear Santa Bear - Beat the ...
Organization: Sammamish Running
Date of Race: 12-14-2024
Description: Join us for the 6th Annual Santa Bear Run along the ...
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Cedar River Half 13.1 - Mile Marker Sponsor
Organization: Sammamish Running
Date of Race: 01-25-2025
Description: Out and back along the Cedar River Trail starting out at ...
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Mile Marker Sponsor - Mile Marker Sponsor
Organization: Sammamish Running
Date of Race: 01-25-2025
Description: Out and back along the Cedar River Trail starting out at ...
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Mile Marker Sponsor - Sponsor
Organization: Sammamish Running
Date of Race: 01-25-2025
Description: Out and back along the Cedar River Trail starting out at ...
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Kids 7-15 Gnome Dash - Kids Gnome Dash ...
Organization: Sammamish Running
Date of Race: 01-25-2025
Description: Out and back along the Cedar River Trail starting out at ...
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Beat the Bear Santa Bear - Santa Bear ...
Organization: Sammamish Running
Date of Race: 12-14-2024
Description: Join us for the 6th Annual Santa Bear Run along the ...
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Running-5K - Individual Age group/open
Organization: Lake Wilderness Triathlon
Date of Race: 06-07-2025
Description: Welcome to the 10th annual Lake Wilderness Run!! We're so excited ...
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Beat the Bear Santa Bear - Santa Bear ...
Organization: Sammamish Running
Date of Race: 12-14-2024
Description: Join us for the 6th Annual Santa Bear Run along the ...
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Running-10K - Individual Age group/open
Organization: Lake Wilderness Triathlon
Date of Race: 06-07-2025
Description: Welcome to the 10th annual Lake Wilderness Run!! We're so excited ...
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Running-Half marathon - Individual Age group/open
Organization: Lake Wilderness Triathlon
Date of Race: 06-07-2025
Description: Welcome to the 10th annual Lake Wilderness Run!! We're so excited ...
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Lake Sammamish Classic 13.1 - Individual Age group/open
Organization: Sammamish Running
Date of Race: 12-28-2024
Description: Race starts promptly at 9 am. Last Half of 2024 will ...
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Lake Sammamish Classic 13.1 - Mile Marker Sponsor ...
Organization: Sammamish Running
Date of Race: 12-28-2024
Description: Race starts promptly at 9 am. Last Half of 2024 will ...
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Lake Wilderness Run 2025
Organization: Lake Wilderness Triathlon
Date of Race: 06-07-2025
Description: Welcome to the 10th annual Lake Wilderness Run!! We're so excited ...
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Beat the Bear the Santa Bear
Organization: Sammamish Running
Date of Race: 12-14-2024
Description: Join us for the 6th Annual Santa Bear Run along the ...
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Cedar River Half 13.1
Organization: Sammamish Running
Date of Race: 01-25-2025
Description: Out and back along the Cedar River Trail starting out at ...
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Lake Sammamish Classic 13.1
Organization: Sammamish Running
Date of Race: 12-28-2024
Description: Race starts promptly at 9 am. Last Half of 2024 will ...
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Community Event - Winterfest
Organization: YMCA of Greater Seattle
Date of Race: 12-13-2024
Description: DescriptionJoin us for this free community event!AgeAll AgesLocationMeredith Mathews Y - ...
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Running-5K - Individual Age group/open
Organization: Pearl Foundation of Puget Sound
Date of Race: 04-26-2025
Description: Join us for an inspiring fundraiser dedicated to supporting the Pearl ...
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Running-5K - Individual Age group/open
Organization: Pearl Foundation of Puget Sound
Date of Race: 04-26-2025
Description: Join us for an inspiring fundraiser dedicated to supporting the Pearl ...
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Running-5K - Individual Age group/open
Organization: Pearl Foundation of Puget Sound
Date of Race: 04-26-2025
Description: This fundraiser is to generate funds to support the Pearl foundation's ...
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Beaver Lake Triathon 2025
Organization: Sammamish Running
Date of Race: 08-24-2025
Description: Race starts promptly at 8 am at the Beaver Lake beach ...
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Walking-5K - Individual Age group/open
Organization: Pearl Foundation of Puget Sound
Date of Race: 04-26-2025
Description: Join us for an inspiring fundraiser dedicated to supporting the Pearl ...
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Complete list of running events in and near Mercer Island, WA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Mercer Island
About Mercer Island
Mercer Island (WA) is a city in King County with an estimated population of 22,699.[4]
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Did you know?
The number of U.S. marathon finishers declined from 2014 to 2015 approximately 8 percent.
