Running races in or near Diamond Bar, CA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Diamond Bar, 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.
Instride Running
Organization: City of Downey
Date of Race: 07-06-2026
Description: DescriptionInstride Running Club is a youth group that trains for ...
View Race Details View on Map
Instride Running
Organization: City of Downey
Date of Race: 07-06-2026
Description: DescriptionInstride Running Club is a youth group that trains for ...
View Race Details View on Map
Instride Running
Organization: City of Downey
Date of Race: 07-06-2026
Description: DescriptionInstride Running Club is a youth group that trains for ...
View Race Details View on Map
Running 100 Session 3
Organization: City of Downey
Date of Race: 05-25-2026
Description: DescriptionInstride Running Club is a youth group that trains for track, ...
View Race Details View on Map
Cross Country Running (Spring)
Organization: San Marino Summer Academy
Date of Race: 06-29-2026
Description: $315 tuition + $25 registration
View Race Details View on Map
Cross Country Running (Spring)
Organization: San Marino Summer Academy
Date of Race: 06-29-2026
Description: Cross Country Running (Fall only) Instructor: Jacques Sallberg Grades: 8-12 Spring ...
View Race Details View on Map
Cross Country Running (Fall)
Organization: San Marino Summer Academy
Date of Race: 06-08-2026
Description: Cross Country Running (Fall only) Instructor: Jacques Sallberg Grades: 8-12 Fall ...
View Race Details View on Map
Running 100 Session 3
Organization: City of Downey
Date of Race: 05-25-2026
Description: DescriptionInstride Running Club is a youth group that trains for track, ...
View Race Details View on Map
Cross Country Running (Fall)
Organization: San Marino Summer Academy
Date of Race: 06-08-2026
Description: $315 Tuition + $25 Registration fee
View Race Details View on Map
Cross Country Running (both semesters)
Organization: San Marino Summer Academy
Date of Race: 06-08-2026
Description: Cross Country Running (both semesters) Instructor: Jacques Sallberg Grades: 8-12 Fall ...
View Race Details View on Map
Cross Country Running (both semesters)
Organization: San Marino Summer Academy
Date of Race: 06-08-2026
Description: $530 tuition + $25 registration
View Race Details View on Map
Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 07-19-2026
Description: It's time for our Rockin' Summer 5k, 10k, 15k, Half Marathon ...
View Race Details View on Map
Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 12-13-2026
Description: It's time for the Reindeer Run 5k, 10k, 15k, ...
View Race Details View on Map
Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 11-01-2026
Description: Welcome to the Luz y Vida 5k, 10k, 15k, ...
View Race Details View on Map
Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 11-28-2026
Description: Come on out and join us for the Spring Equinox 5k, ...
View Race Details View on Map
Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 11-01-2026
Description: Welcome to the Luz y Vida 5k, 10k, 15k, ...
View Race Details View on Map
Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 09-27-2026
Description: It's time for the Golden Strides 5k, 10k, 15k, ...
View Race Details View on Map
Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 12-13-2026
Description: It's time for the Reindeer Run 5k, 10k, 15k, ...
View Race Details View on Map
Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 09-27-2026
Description: It's time for the Golden Strides 5k, 10k, 15k, ...
View Race Details View on Map
Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 07-19-2026
Description: It's time for our Rockin' Summer 5k, 10k, 15k, Half Marathon ...
View Race Details View on Map
Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 07-19-2026
Description: It's time for our Rockin' Summer 5k, 10k, 15k, Half Marathon ...
View Race Details View on Map
Running-5K - Individual Age group/open
Organization: ABWR
Date of Race: 09-27-2026
Description: It's time for the Golden Strides 5k, 10k, 15k, ...
View Race Details View on Map
Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 11-28-2026
Description: Come on out and join us for the Spring Equinox 5k, ...
View Race Details View on Map
Running-15K - Individual Age group/open
Organization: ABWR
Date of Race: 12-13-2026
Description: It's time for the Reindeer Run 5k, 10k, 15k, ...
View Race Details View on Map
Running-10K - Individual Age group/open
Organization: ABWR
Date of Race: 11-01-2026
Description: Welcome to the Luz y Vida 5k, 10k, 15k, ...
View Race Details View on Map
Complete list of running events in and near Diamond Bar, CA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Diamond Bar
About Diamond Bar
Diamond Bar (CA) is a city in Los Angeles County with an estimated population of 55,544.[4]
Races Local Newsletter
Subscribe to get the latest on racing delivered to your inbox, once per week.
Did you know?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
