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Races in Newcastle, WA

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.

Saucony

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 ...

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 ...

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 ...

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 ...

Running-3K - Individual Age group/open

Organization: Inspire Love, Inspire Care

Date of Race: 09-06-2025

Description: Event details and schedule

Running-1K - Individual Age group/open

Organization: Inspire Love, Inspire Care

Date of Race: 09-06-2025

Description: Event details and schedule

Running-5K - Individual Age group/open

Organization: Inspire Love, Inspire Care

Date of Race: 09-06-2025

Description: Event details and schedule

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 ...

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 ...

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 ...

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 ...

Half Sam

Organization: Sammamish Running

Date of Race: 08-17-2025

Description: Join us for the Half Sam 13.1 miles of beautiful Lakefront ...

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 ...

Inspire Love, Inspire Care Foundation Walk / Run

Organization: Inspire Love, Inspire Care

Date of Race: 09-06-2025

Description: Event details and schedule

Walking-5K - Individual Age group/open

Organization: Inspire Love, Inspire Care

Date of Race: 09-06-2025

Description: Event details and schedule

Walking-3K - Individual Age group/open

Organization: Inspire Love, Inspire Care

Date of Race: 09-06-2025

Description: Event details and schedule

Walking-1K - Individual Age group/open

Organization: Inspire Love, Inspire Care

Date of Race: 09-06-2025

Description: Event details and schedule

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 ...

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 ...

Sammamish Marathon

Organization: Sammamish Running

Date of Race: 09-01-2025

Description: The inaugural Sammamish Marathon starting at the Issaquah Courthouse on 220th ...

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 ...

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 ...

Duathlon-10 mile bike - 5 mile Run - ...

Organization: Sammamish Running

Date of Race: 09-07-2025

Description: Soaring Eagle DuathlonSeptember 7, 2025, 8 am

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 ...

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 ...

Lock Laces

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.

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