Running races in or near South Plainfield, NJ
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local South Plainfield, NJ 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-Half marathon - Individual
Organization: Trimara Inc.
Date of Race: 10-03-2026
Description: With the famous ...
View Race Details View on Map
Running-Half marathon - Individual
Organization: Trimara Inc.
Date of Race: 12-20-2026
Description: Tis the season to be running the Holiday ...
View Race Details View on Map
Running-Half marathon - Individual
Organization: Trimara Inc.
Date of Race: 10-03-2026
Description: With the famous ...
View Race Details View on Map
Running-Half marathon - Individual
Organization: Trimara Inc.
Date of Race: 10-03-2026
Description: With the famous ...
View Race Details View on Map
Running-Half marathon - Individual - HM
Organization: External_ORG_May
Date of Race: 10-16-2026
Description: Event details and schedule
View Race Details View on Map
Running-10K - Individual - 10k - FEE
Organization: External_ORG_May
Date of Race: 10-16-2026
Description: Event details and schedule
View Race Details View on Map
Running-Half marathon - Individual Age group/open
Organization: Trimara Inc.
Date of Race: 09-20-2026
Description: The Race Guys decided that Prospect Park ...
View Race Details View on Map
10K - Nov. 8 - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-08-2026
Description: Brooklyn is NYC’s most populous borough and has a rich running ...
View Race Details View on Map
5K - Oct 4 - 5k
Organization: Du City Tri Runs, Inc.
Date of Race: 10-04-2026
Description: The JC Green Half Marathon, 10K, 5K ...
View Race Details View on Map
NOV 26 • 5K - Individual Age group/open
Organization: Du City Tri Runs, Inc.
Date of Race: 11-26-2026
Description:
View Race Details View on Map
The Big Turkey Half Marathon, 10k, 5k 2026
Organization: Du City Tri Runs, Inc.
Date of Race: 11-26-2026
Description:
View Race Details View on Map
The JC Green Fall Half lMarathon, 10k, 5k ...
Organization: Du City Tri Runs, Inc.
Date of Race: 10-04-2026
Description: The JC Green Half Marathon, 10K, 5K ...
View Race Details View on Map
The Brooklyn Fall Half
Organization: Du City Tri Runs, Inc.
Date of Race: 11-08-2026
Description: Brooklyn is NYC’s most populous borough and has a rich running ...
View Race Details View on Map
10K - Nov 22 - Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 11-22-2026
Description: To race on a ...
View Race Details View on Map
5K - Nov 22 - Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 11-22-2026
Description: To race on a ...
View Race Details View on Map
Half - Oct 4 - 13.1 miles
Organization: Du City Tri Runs, Inc.
Date of Race: 10-04-2026
Description: The JC Green Half Marathon, 10K, 5K ...
View Race Details View on Map
HALF MARATHON - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-14-2026
Description: Event details and schedule
View Race Details View on Map
10K - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-14-2026
Description: Event details and schedule
View Race Details View on Map
HALF - 13.1 Miler Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 12-06-2026
Description: This course takes you through the natural beauty of ...
View Race Details View on Map
VIRTUAL ONLY - HALF - Individual Age group/open
Organization: Du City Tri Runs, Inc.
Date of Race: 09-13-2026
Description: This course takes you through the natural beauty of ...
View Race Details View on Map
HALF-SEP 13 - 13.1 Miler Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 09-13-2026
Description: This course takes you through the natural beauty of ...
View Race Details View on Map
The Brooklynite Fall 10K & 5K
Organization: Du City Tri Runs, Inc.
Date of Race: 10-11-2026
Description: Please always check our website: http://www.citytri.com for updates. Welcome to ...
View Race Details View on Map
The Bay Ridge Half Marathon!
Organization: Trimara Inc.
Date of Race: 10-03-2026
Description: With the famous ...
View Race Details View on Map
The NJ Fall Endurance Classic Half Marathon, 10k, ...
Organization: Du City Tri Runs, Inc.
Date of Race: 09-13-2026
Description: This course takes you through the natural beauty of ...
View Race Details View on Map
5K - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-14-2026
Description: Event details and schedule
View Race Details View on Map
Complete list of running events in and near South Plainfield, NJ: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about South Plainfield
About South Plainfield
South Plainfield (NJ) is a borough in Middlesex County with an estimated population of 23,385.[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.
