Running races in or near Mattawa, WA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Mattawa, 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.
Columbia River Half Iron 1.2S, 56B, 13.1R
Organization: Sammamish Running
Date of Race: 06-14-2026
Description: Join us for the inaugural running of the Columbia River Half ...
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Triathlon-Half/Middle Distance - Relay Half Iron 1.2S, 56B, ...
Organization: Sammamish Running
Date of Race: 06-14-2026
Description: Join us for the inaugural running of the Columbia River Half ...
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Triathlon-Half/Middle Distance - Full Half Iron 1.2S, 56B, ...
Organization: Sammamish Running
Date of Race: 06-14-2026
Description: Join us for the inaugural running of the Columbia River Half ...
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Complete list of running events in and near Mattawa, WA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Mattawa
About Mattawa
Mattawa (WA) is a city in Grant County with an estimated population of 4,437.[4]
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Did you know?
Historically, more marathons are run in the month of October than any other month (in the U.S.).
