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Half Marathon Calendar near Mountainside 2025-2026

Monthly updates for Mountainside

Get new running races (and updates) in your inbox every month.

Explore the top half marathons near Mountainside for 2025-2026! We've gathered 45 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
21
Su

The Holiday Half Marathon

13 mi
Dec
27
Sa

The Best Races - New York

5 km 10 km 13 mi
Dec
28
Su

Queens NYC Chiller Half

5 km 10 km Half Marathon
January 2026
Jan
1
Th

Sri Chinmoy New Year's Day Half-Marathon

13 mi
Jan
10
Sa

SOMO Winter Trail Series

Trail Run 5 km 10 km 13 mi
Jan
24
Sa

NSRF Polar Bear Half Marathon

5 km 13 mi
February 2026
Feb
7
Sa

The Go Hard or Go Home Half Marathon

13 mi
Feb
8
Su

JC Valentine Half Marathon

5 km 6 mi 13 mi
Feb
22
Su

NYCRUNS Central Park Half Marathon

Half Marathon
March 2026
Mar
7
Sa

NSRF The Queens St. Patrick's 5K & Half Marathon

5 km Half Marathon
Mar
15
Su

NSRF Brooklyn St. Patrick's Half Marathon

5 km 10 km Half Marathon
Mar
15
Su

March Madness Half Marathon - Newark

5 km 10 km Half Marathon
Mar
15
Su

March Madness Half Marathon - Essex County

5 km 10 km Half Marathon
Mar
21
Sa

Brooklyn Spring Half

5 km 10 km Half Marathon
Mar
22
Su

Garden State 10 Miler

5 km 10 mi 13 mi
Mar
28
Sa

The Less Popular Staten Island Half Marathon

Half Marathon
Mar
29
Su

The Queens Spring Half

3 mi 6 mi 13 mi
April 2026
Apr
11
Sa

Rockaway Beach Spring Marathon

5 km Half Marathon Marathon
Apr
19
Su

Jersey City Marathon

Half Marathon Marathon
Apr
26
Su

NYCRUNS Brooklyn Half Marathon

Half Marathon