Running races in or near Newcastle, WA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Newcastle, 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 - Maple Valley 10k
Organization: Sammamish Running
Date of Race: 09-14-2025
Description: Join us for a late summer Half 13.1, 10k, 5k trail ...
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Running - Maple Valley 5k
Organization: Sammamish Running
Date of Race: 09-14-2025
Description: Join us for a late summer Half 13.1, 10k, 5k trail ...
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Running - Half 13.1 - Half Sam
Organization: Sammamish Running
Date of Race: 08-17-2025
Description: Join us for the Half Sam 13.1 miles of beautiful Lakefront ...
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Running - Maple Valley Half 13.1
Organization: Sammamish Running
Date of Race: 09-14-2025
Description: Join us for a late summer Half 13.1, 10k, 5k trail ...
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Running-3K - Individual Age group/open
Organization: Inspire Love, Inspire Care
Date of Race: 09-06-2025
Description: Event details and schedule
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Running-1K - Individual Age group/open
Organization: Inspire Love, Inspire Care
Date of Race: 09-06-2025
Description: Event details and schedule
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Running-5K - Individual Age group/open
Organization: Inspire Love, Inspire Care
Date of Race: 09-06-2025
Description: Event details and schedule
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Seattle Waterfront 10k/5k Race - 10k
Organization: Sammamish Running
Date of Race: 10-18-2025
Description: Come out and race on the new Seattle Waterfront. Flat and ...
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Seattle Waterfront 10k/5k Race - 5k
Organization: Sammamish Running
Date of Race: 10-18-2025
Description: Come out and race on the new Seattle Waterfront. Flat and ...
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Maple Valley Half 13.1, 10k/5k
Organization: Sammamish Running
Date of Race: 09-14-2025
Description: Join us for a late summer Half 13.1, 10k, 5k trail ...
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Seattle Waterfront 10k/5k Race - Sponsor
Organization: Sammamish Running
Date of Race: 10-18-2025
Description: Come out and race on the new Seattle Waterfront. Flat and ...
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Half Sam
Organization: Sammamish Running
Date of Race: 08-17-2025
Description: Join us for the Half Sam 13.1 miles of beautiful Lakefront ...
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Seattle Waterfront 10k/5k
Organization: Sammamish Running
Date of Race: 10-18-2025
Description: Come out and race on the new Seattle Waterfront. Flat and ...
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Inspire Love, Inspire Care Foundation Walk / Run
Organization: Inspire Love, Inspire Care
Date of Race: 09-06-2025
Description: Event details and schedule
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Walking-5K - Individual Age group/open
Organization: Inspire Love, Inspire Care
Date of Race: 09-06-2025
Description: Event details and schedule
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Walking-3K - Individual Age group/open
Organization: Inspire Love, Inspire Care
Date of Race: 09-06-2025
Description: Event details and schedule
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Walking-1K - Individual Age group/open
Organization: Inspire Love, Inspire Care
Date of Race: 09-06-2025
Description: Event details and schedule
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Running-Marathon - Individual Age group/open
Organization: Sammamish Running
Date of Race: 09-01-2025
Description: The inaugural Sammamish Marathon starting at the Issaquah Courthouse on 220th ...
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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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Sammamish Marathon
Organization: Sammamish Running
Date of Race: 09-01-2025
Description: The inaugural Sammamish Marathon starting at the Issaquah Courthouse on 220th ...
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MAPS Rahma Quran Academy: Sisters Tajweed
Organization: MAPS-Redmond
Date of Race: 09-09-2025
Description: The inaugural Sammamish Marathon starting at the Issaquah Courthouse on 220th ...
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Heart and Sole: Training for a 5K
Organization: BASIS Independent Bellevue
Date of Race: 09-29-2025
Description: Advisor: Ms. Bryant and Ms. Olivia Emails: kyera.bryant@basisindependent.com olivia.bryant@basisindependent.com ...
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Duathlon-10 mile bike - 5 mile Run - ...
Organization: Sammamish Running
Date of Race: 09-07-2025
Description: Soaring Eagle DuathlonSeptember 7, 2025, 8 am
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Triathlon-Sprint - Sponsor Pre-Race Pasta Dinner
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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Triathlon-Sprint - Sponsor - Mile 1 Marker Sponsor
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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Complete list of running events in and near Newcastle, WA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Newcastle
About Newcastle
Newcastle (WA) is a city in King County with an estimated population of 10,380.[4]
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Did you know?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
