Running races in or near Simi Valley, CA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Simi Valley, CA 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: ABWR
Date of Race: 01-01-2026
Description: It's time to celebrate the new year at the Happy New ...
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Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 04-18-2026
Description: We are back at Hansen Dam!! It's ...
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Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 03-15-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 05-10-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 01-01-2026
Description: It's time to celebrate the new year at the Happy New ...
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Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 05-10-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 01-01-2026
Description: It's time to celebrate the new year at the Happy New ...
View Race Details View on Map
Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 04-18-2026
Description: We are back at Hansen Dam!! It's ...
View Race Details View on Map
Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 04-18-2026
Description: We are back at Hansen Dam!! It's ...
View Race Details View on Map
Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 03-15-2026
Description: We are back at Lake Balboa/Woodley Park!!
View Race Details View on Map
Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 03-15-2026
Description: We are back at Lake Balboa/Woodley Park!!
View Race Details View on Map
Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 05-10-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-Half Marathon - Individual Age group/open
Organization: ABWR
Date of Race: 05-10-2026
Description: We are back at Lake Balboa/Woodley Park!!
View Race Details View on Map
Running-Half Marathon - Individual Age group/open
Organization: ABWR
Date of Race: 04-18-2026
Description: We are back at Hansen Dam!! It's ...
View Race Details View on Map
Running-Half Marathon - Individual Age group/open
Organization: ABWR
Date of Race: 03-15-2026
Description: We are back at Lake Balboa/Woodley Park!!
View Race Details View on Map
Running-Half marathon - Individual Age group/open
Organization: ABWR
Date of Race: 01-01-2026
Description: It's time to celebrate the new year at the Happy New ...
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5K - 5K
Organization: New Global Adventures
Date of Race: 06-20-2026
Description: Celebrate Father's Day by kicking off the weekend with an awesome ...
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Virtual Runner - Individual Age group/open
Organization: New Global Adventures
Date of Race: 03-21-2026
Description: Southern California features a diverse range of nature and terrain, giving ...
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Half Marathon - Half Marathon
Organization: New Global Adventures
Date of Race: 06-20-2026
Description: Celebrate Father's Day by kicking off the weekend with an awesome ...
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10K - 10K
Organization: New Global Adventures
Date of Race: 06-20-2026
Description: Celebrate Father's Day by kicking off the weekend with an awesome ...
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Virtual Runner - Individual Age group/open
Organization: New Global Adventures
Date of Race: 06-20-2026
Description: Celebrate Father's Day by kicking off the weekend with an awesome ...
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Kids Fun Run - Kids Fun Run
Organization: New Global Adventures
Date of Race: 06-20-2026
Description: Celebrate Father's Day by kicking off the weekend with an awesome ...
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Half Marathon - Half Marathon
Organization: New Global Adventures
Date of Race: 03-21-2026
Description: Southern California features a diverse range of nature and terrain, giving ...
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2026 VALENCIA Trail Race
Organization: New Global Adventures
Date of Race: 03-21-2026
Description: Southern California features a diverse range of nature and terrain, giving ...
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50K Ultra - 50K Ultra
Organization: New Global Adventures
Date of Race: 03-21-2026
Description: Southern California features a diverse range of nature and terrain, giving ...
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Complete list of running events in and near Simi Valley, CA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Simi Valley
About Simi Valley
Simi Valley (CA) is a city in Ventura County with an estimated population of 124,237.[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.).
