Running races in or near Middlesex, NJ
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Middlesex, 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
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 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 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
10K - Aug 23 - Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 08-23-2026
Description: To race on a ...
View Race Details View on Map
10K-SEP 13 - 10K 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
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
The Holiday Half Marathon!
Organization: Trimara Inc.
Date of Race: 12-20-2026
Description: Tis the season to be running the Holiday ...
View Race Details View on Map
Memorial Day Half Marathon, 10k, 5k
Organization: Du City Tri Runs, Inc.
Date of Race: 05-31-2026
Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...
View Race Details View on Map
The Brooklynite Summer Half, 10K & 5K
Organization: Du City Tri Runs, Inc.
Date of Race: 07-12-2026
Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...
View Race Details View on Map
The NJ Endurance Classic Half Marathon, 10k, 5k
Organization: Du City Tri Runs, Inc.
Date of Race: 06-21-2026
Description: This course takes you through the natural beauty of ...
View Race Details View on Map
Half - Aug 23 - Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 08-23-2026
Description: To race on a ...
View Race Details View on Map
HALF MARATHON - July 12 - INTERNATIONAL - ...
Organization: Du City Tri Runs, Inc.
Date of Race: 07-12-2026
Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...
View Race Details View on Map
10K-July 12 - US Resident or Citizen-July 12
Organization: Du City Tri Runs, Inc.
Date of Race: 07-12-2026
Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...
View Race Details View on Map
5K-JULY 12 - INTERNATIONAL Participant - JULY 12
Organization: Du City Tri Runs, Inc.
Date of Race: 07-12-2026
Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...
View Race Details View on Map
5K-MAY 31 - US Resident or Citizen-MAY 31
Organization: Du City Tri Runs, Inc.
Date of Race: 05-31-2026
Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...
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
The NYC Skyline
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 Middlesex, NJ: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Middlesex
About Middlesex
Middlesex (NJ) is a borough in Middlesex County with an estimated population of 13,635.[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.
