Running races in or near Seatac, WA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Seatac, 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.
Running-5K - Individual Age group/open
Organization: Mount Tahoma SDA
Date of Race: 06-15-2025
Description: The Father's Day 5K takes place on a ...
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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-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-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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Bubble Run | Seattle
Organization: Viral Run
Date of Race: 08-03-2025
Description: If you’ve done a traditional 5K, you know they ...
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Bubble Run - Exclusive VIP Registration- Regular Price ...
Organization: Viral Run
Date of Race: 08-03-2025
Description: If you’ve done a traditional 5K, you know they ...
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Hood Canal Salmon Run 5K - Adult Registration ...
Organization: Hood Canal Salmon Enhancement Group
Date of Race: 06-14-2025
Description: The 5K course offers a flat, unpaved trail around the ...
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Muddy Dash - Exclusive VIP Registration - R̶e̶g̶u̶l̶a̶r̶ ...
Organization: Viral Run
Date of Race: 07-26-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Newcastle Beach Eastrail Redhawk - 5k
Organization: Sammamish Running
Date of Race: 06-21-2025
Description: Join us for the Newcastle Beach 10k, Half 13.1, 5k part ...
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Hood Canal Salmon Run 5K - Youth Registration ...
Organization: Hood Canal Salmon Enhancement Group
Date of Race: 06-14-2025
Description: The 5K course offers a flat, unpaved trail around the ...
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Newcastle Beach Eastrail Redhawk - Race Series 2025 ...
Organization: Sammamish Running
Date of Race: 06-21-2025
Description: Join us for the Newcastle Beach 10k, Half 13.1, 5k part ...
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Newcastle Beach 10k, 5k, Half 13.1
Organization: Sammamish Running
Date of Race: 06-21-2025
Description: Join us for the Newcastle Beach 10k, Half 13.1, 5k part ...
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Newcastle Beach Eastrail Redhawk - 10k
Organization: Sammamish Running
Date of Race: 06-21-2025
Description: Join us for the Newcastle Beach 10k, Half 13.1, 5k part ...
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Newcastle Beach Eastrail Redhawk - Half 13.1
Organization: Sammamish Running
Date of Race: 06-21-2025
Description: Join us for the Newcastle Beach 10k, Half 13.1, 5k part ...
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Bubble Run - Value Registrations- R̶e̶g̶u̶l̶a̶r̶ P̶r̶i̶c̶e̶ $̶5̶4̶.̶9̶5̶
Organization: Viral Run
Date of Race: 08-03-2025
Description: If you’ve done a traditional 5K, you know they ...
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2nd Annual Hood Canal Salmon Run 5K
Organization: Hood Canal Salmon Enhancement Group
Date of Race: 06-14-2025
Description: The 5K course offers a flat, unpaved trail around the ...
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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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Muddy Dash - Value Registration- R̶e̶g̶u̶l̶a̶r̶ P̶r̶i̶c̶e̶ $̶7̶4.9̶5̶
Organization: Viral Run
Date of Race: 07-26-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Muddy Dash | Seattle
Organization: Viral Run
Date of Race: 07-26-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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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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5K Run/Walk
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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Foothills Dash 2025
Organization: Pierce County Parks
Date of Race: 06-28-2025
Description: DescriptionThis fun and scenic race on the Foothills Trail is open ...
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Donut Dash 5K
Organization: Pierce County Parks
Date of Race: 06-21-2025
Description: DescriptionWho doesn't LOVE donuts?! Enjoy a donut pit stop on the ...
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Father's Day 5K (Walk, Bike, or Run)
Organization: Mount Tahoma SDA
Date of Race: 06-15-2025
Description: The Father's Day 5K takes place on a ...
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Complete list of running events in and near Seatac, WA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Seatac
About Seatac
Seatac (WA) is a city in King County with an estimated population of 26,909.[4]
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Did you know?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
