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.
Running-Half marathon - Individual
Organization: Trimara Inc.
Date of Race: 12-20-2026
Description: Tis the season to be running the Holiday ...
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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 ...
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HALF MARATHON - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-14-2026
Description: Everyone knows the best view of Manhattan isn't in Manhattan. The ...
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10K - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-14-2026
Description: Everyone knows the best view of Manhattan isn't in Manhattan. The ...
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10K - 10K Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 12-06-2026
Description: This course takes you through the natural beauty of ...
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5K - 5K Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 12-06-2026
Description: This course takes you through the natural beauty of ...
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5K - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-14-2026
Description: Everyone knows the best view of Manhattan isn't in Manhattan. The ...
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5K - Individual Age group/open
Organization: Du City Tri Runs, Inc.
Date of Race: 10-31-2026
Description: Get your running costume on and run with the ghosts!!! A ...
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The Holiday Half Marathon!
Organization: Trimara Inc.
Date of Race: 12-20-2026
Description: Tis the season to be running the Holiday ...
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The NJ Halloween Half Marathon, 10K, and 5K
Organization: Du City Tri Runs, Inc.
Date of Race: 10-31-2026
Description: Get your running costume on and run with the ghosts!!! A ...
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The Manhattanite 10K and 5K @manhattan @riverside park
Organization: Du City Tri Runs, Inc.
Date of Race: 12-05-2026
Description: The seldom seen
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NOV 26 • 5K - Individual Age group/open
Organization: Du City Tri Runs, Inc.
Date of Race: 11-26-2026
Description:
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5K - DEC 05 - Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 12-05-2026
Description: The seldom seen
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Half marathon - Individual Age group/open
Organization: Du City Tri Runs, Inc.
Date of Race: 10-31-2026
Description: Get your running costume on and run with the ghosts!!! A ...
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NOV 26 - HALF - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-26-2026
Description:
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10K - Individual Age group/open
Organization: Du City Tri Runs, Inc.
Date of Race: 10-31-2026
Description: Get your running costume on and run with the ghosts!!! A ...
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The Dukes Holiday Half Marathon -10K -and 5K ...
Organization: Du City Tri Runs, Inc.
Date of Race: 12-06-2026
Description: This course takes you through the natural beauty of ...
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NOV 26 - 10K - Individual registration
Organization: Du City Tri Runs, Inc.
Date of Race: 11-26-2026
Description:
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10K - DEC 05 - Individual
Organization: Du City Tri Runs, Inc.
Date of Race: 12-05-2026
Description: The seldom seen
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The NYC Skyline
Organization: Du City Tri Runs, Inc.
Date of Race: 11-14-2026
Description: Everyone knows the best view of Manhattan isn't in Manhattan. The ...
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The Big Turkey Half Marathon, 10k, 5k 2026
Organization: Du City Tri Runs, Inc.
Date of Race: 11-26-2026
Description:
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Trunk or Treat 2026
Organization: Parsippany Recreation and PAL
Date of Race: 10-31-2026
Description: Description🎃 2026 Township Trunk or Treat ...
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Running-Both 3 mile and 5 mile trails and ...
Organization: Vercammen PC
Date of Race: 01-07-2923
Description: Freezing Cold Hash FCH is back to Edison! Jan. 7, 20235 ...
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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?
In 2015, the 5K maintained the #1 position of all race distances with 7.6 million finishers (U.S.).
