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: 11-26-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 11-26-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 07-05-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 07-05-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 11-26-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 07-05-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-5K - Individual Age group/open
Organization: Active Zapier Test Account
Date of Race: 05-07-2026
Description: Event details and schedule
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Running-Half Marathon - Individual Age group/open
Organization: ABWR
Date of Race: 11-26-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Running-5 Mile - Individual Age group/open
Organization: Active Zapier Test Account
Date of Race: 05-07-2026
Description: Event details and schedule
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Turkey Trot 5k, 10k, 15k, Half Marathon
Organization: ABWR
Date of Race: 11-26-2026
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: 07-05-2026
Description: We are back at Lake Balboa/Woodley Park!!
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Red, White & Blue 5k, 10k, 15k, Half ...
Organization: ABWR
Date of Race: 07-05-2026
Description: We are back at Lake Balboa/Woodley Park!!
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12-Hours - 4-Person Team Relay
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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24-Hours - 2-Person Team Relay
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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1-Mile Hike - Individual Age group/open
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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24-Hours - 8-Person Team Relay
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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5K - Individual Age group/open
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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6-Hours - 4-Person Team Relay
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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12-Hours - Individual Age group/open
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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Zapier Test
Organization: Active Zapier Test Account
Date of Race: 05-07-2026
Description: Event details and schedule
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YOUTH 5K/10K (Under 18) - Individual Age group/open
Organization: New Global Adventures
Date of Race: 09-26-2026
Description: Join us to be a part of Santa Clarita's premiernight run/walk ...
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VIRTUAL 5K/10K - Individual Age group/open
Organization: New Global Adventures
Date of Race: 09-26-2026
Description: Join us to be a part of Santa Clarita's premiernight run/walk ...
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30K - 2-Person Team Relay
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
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120K - Individual Age group/open
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
View Race Details View on Map
120K - 8-Person Team Relay
Organization: New Global Adventures
Date of Race: 05-02-2026
Description: Ready to hit the trails? TheSanta Clarita Trail Raceoffersseven exciting distances—5K, ...
View Race Details View on Map
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?
The number of U.S. marathon finishers declined from 2014 to 2015 approximately 8 percent.
