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Races in Mountainside, NJ

Running races in or near Mountainside, NJ

Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more

See below for a frequently-updated, comprehensive list of upcoming running events in the local Mountainside, 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.

Fleet Feet Sports

Running-Half marathon - Individual

Organization: Trimara Inc.

Date of Race: 10-04-2025

Description: With the famous ...

Running-Half marathon - Individual

Organization: Trimara Inc.

Date of Race: 12-13-2025

Description: Tis the season to be running the Holiday ...

Running-Half marathon - Individual

Organization: Trimara Inc.

Date of Race: 10-04-2025

Description: With the famous ...

Running-5K - Individual Age group/open

Organization: Rockaway Track Club / RockapulcoRun

Date of Race: 06-21-2025

Description: McCarthy Brothers Memorial Walk/Run (5K)Saturday, June 21st 2025Marine ParkFillmore Ave, Brooklyn, ...

Running-1 Mile - Individual Age group/open

Organization: Rockaway Track Club / RockapulcoRun

Date of Race: 06-21-2025

Description: McCarthy Brothers Memorial Walk/Run (5K)Saturday, June 21st 2025Marine ParkFillmore Ave, Brooklyn, ...

10K - Nov. 9 - Individual registration

Organization: Du City Tri Runs, Inc.

Date of Race: 11-09-2025

Description: Location: Prospect Park, Brooklyn, NYC Reference Address:

5K - Nov. 9 - Individual registration

Organization: Du City Tri Runs, Inc.

Date of Race: 11-09-2025

Description: Location: Prospect Park, Brooklyn, NYC Reference Address:

10K - 10K Individual

Organization: Du City Tri Runs, Inc.

Date of Race: 06-28-2025

Description: This course takes you through the natural beauty of ...

NOV 27 - HALF - Individual registration

Organization: Du City Tri Runs, Inc.

Date of Race: 11-27-2025

Description:

10K - Dec 6 - Individual registration

Organization: Du City Tri Runs, Inc.

Date of Race: 12-06-2025

Description: The seldom-seen Freedom Tunnel will echo with the sound of your ...

HALF MARATHON - Individual registration

Organization: Du City Tri Runs, Inc.

Date of Race: 11-15-2025

Description:

Event Promotions List 2025

Organization: Princeton Athletic Club of Princeton, New Jersey, Inc.

Date of Race: 05-01-2025

Description: This registration adds you to the event promotions contact database. Event ...

MCCARTHY BROTHERS MEMORIAL RUN/WALK 1MILE RUN/WALK

Organization: Rockaway Track Club / RockapulcoRun

Date of Race: 06-21-2025

Description: McCarthy Brothers Memorial Walk/Run (5K)Saturday, June 21st 2025Marine ParkFillmore Ave, Brooklyn, ...

The NJ Endurance Classic Half Marathon, 10k, 5k

Organization: Du City Tri Runs, Inc.

Date of Race: 06-28-2025

Description: This course takes you through the natural beauty of ...

10K - May 24, 2025 - US Resident ...

Organization: Du City Tri Runs, Inc.

Date of Race: 05-24-2025

Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...

5k - May 24, 2025 - US Resident ...

Organization: Du City Tri Runs, Inc.

Date of Race: 05-24-2025

Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...

OCT 12 - 10K - Individual Age group/open

Organization: Du City Tri Runs, Inc.

Date of Race: 10-12-2025

Description: Please always check our website: http://www.citytri.com for updates. Welcome to ...

OCT 12 - 5K - Individual Age group/open

Organization: Du City Tri Runs, Inc.

Date of Race: 10-12-2025

Description: Please always check our website: http://www.citytri.com for updates. Welcome to ...

10K - 10K Individual

Organization: Du City Tri Runs, Inc.

Date of Race: 04-06-2025

Description: Run Course: Shore RoadPromenade Reference Address:6901 Shore ...

10K - RESIDENT or US CITIZEN - Individual

Organization: Du City Tri Runs, Inc.

Date of Race: 08-30-2025

Description: Join us to run "The Hamilton" on Labor Day weekend in ...

5K - RESIDENT or US CITIZEN - Individual

Organization: Du City Tri Runs, Inc.

Date of Race: 08-30-2025

Description: Join us to run "The Hamilton" on Labor Day weekend in ...

Half Marathon - RESIDENT or US Citizen ...

Organization: Du City Tri Runs, Inc.

Date of Race: 08-30-2025

Description: Join us to run "The Hamilton" on Labor Day weekend in ...

Half - Oct 5 - 13.1 miles

Organization: Du City Tri Runs, Inc.

Date of Race: 10-05-2025

Description: The JC Green Half Marathon, 10K, 5K ...

Running-Half marathon - Individual Age group/open

Organization: Trimara Inc.

Date of Race: 09-21-2025

Description: The Race Guys decided that Prospect Park ...

HALF MARATHON - VIRTUAL ONLY - HALF MARATHON ...

Organization: Du City Tri Runs, Inc.

Date of Race: 05-24-2025

Description: Run Course: Fort Hamilton Base or Virtual Course Reference ...

Road Runner Sports

Complete list of running events in and near Mountainside, NJ: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.


More information about Mountainside

About Mountainside

Mountainside (NJ) is a borough in Union County with an estimated population of 6,685.[4]

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Did you know?

Historically, more marathons are run in the month of October than any other month (in the U.S.).

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