Running races in or near San Marcos, CA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local San Marcos, 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.
Muddy Dash - Standard Registration
Organization: Viral Run
Date of Race: 04-19-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Muddy Dash - Value Registration
Organization: Viral Run
Date of Race: 04-19-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Muddy Dash - VIP Registration 💎
Organization: Viral Run
Date of Race: 04-19-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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Muddy Dash | San Diego | April 19th
Organization: Viral Run
Date of Race: 04-19-2025
Description: Muddy Dash is not your average mud run! Get ready for ...
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2025 Solana Beach Triathlon & Duathlon and San ...
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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2025 Wicked Wine Run Temecula, CA
Organization: Wicked Wine Run
Date of Race: 11-15-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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Triathlon-Relay - Non-participating team captain
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Triathlon-Elite Only - Individual Age group/open
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Duathlon-1 mile Run - 10 mile Bike - ...
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Aqua-thlon (Swim / Run) - Individual Age group/open
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Triathlon-Relay - Group-registration team Age group/open
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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San Diego Tri Series 5K - Individual Age ...
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Volunteer then Run! - Individual
Organization: Wicked Wine Run
Date of Race: 11-15-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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Aquabike (Swim / Bike) - Individual Age group/open
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Triathlon-Sprint - Duo Racer (Challenged Only) - Group-registration ...
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Triathlon-Relay - Join a team previously created by ...
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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2025 Giro di San Diego
Organization: Granfondo Cycling Tours Inc.
Date of Race: 06-07-2025
Description: Join the GIRO in this exciting day filled with ...
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Duathlon-Duo Racer (Challenged Only) - Group-registration team Age ...
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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Triathlon - Individual Age group/open
Organization: KOZ Events
Date of Race: 07-27-2025
Description: This will be a USAT Sanctioned Triathlon, Duathlon, Aqua-thlon, Aquabike! New ...
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5K WICKED WINE RUN - Individual
Organization: Wicked Wine Run
Date of Race: 11-15-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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1K TASTING WALK - Individual
Organization: Wicked Wine Run
Date of Race: 11-15-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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BOTH 5K + 1K! - Individual
Organization: Wicked Wine Run
Date of Race: 11-15-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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2025 Wicked Wine Run San Diego
Organization: Wicked Wine Run
Date of Race: 03-01-2025
Description: Whether you’re a seasoned runner or just love to walk and ...
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Fabric Collage
Organization: City of Encinitas
Date of Race: 02-13-2025
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Fabric Collage
Organization: City of Encinitas
Date of Race: 01-16-2025
Description: DescriptionInternet Registration has not begun yet. Check Registration Dates in ...
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Complete list of running events in and near San Marcos, CA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about San Marcos
About San Marcos
San Marcos (CA) is a city in San Diego County with an estimated population of 83,781.[4]
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Did you know?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
