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Running calendar near Chelmsford 2025-2026

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

October 2025
Oct
18
Saturday

Miles for Mary

5 km
Oct
19
Sunday

Baystate Marathon

13 mi 26 mi
Oct
19
Sunday

Run the Res 5k

5 km
Oct
19
Sunday

South Street Youth Center Family 5K

5 km
Oct
25
Saturday

NovusMage Demo Race

10 km 13 mi
Oct
26
Sunday

Powisset Farm Trail Run - Fall

Trail Run 3 mi 5 mi 8 mi
November 2025
Nov
1
Saturday

TARC Stone Cat Trail Festival

Trail Run 10 km 21 km ... 50 mi 100 km
Nov
2
Sunday

Ocean View Half Marathon

5 km 13 mi
Nov
2
Sunday

Cambridge Half Marathon

13 mi
Nov
8-9
Sa - Su

Fenway Spartan Stadion Event Weekend

Obstacle Run 5 km
Nov
8
Saturday

DAV 5K

5 km
Nov
9
Sunday

Harborside Half Marathon

5 km 13 mi
Nov
9
Sunday

Boston River Run

5 km
Nov
9
Sunday

Manchester City Marathon

5 km 13 mi 26 mi
Nov
15
Saturday

Tarckey Trot 6 Hour - Winchester, MA

Backyard Ultra 6 hr
Nov
22
Saturday

Rachel's Run

5 km
Nov
23
Sunday

Wobble Before You Gobble 5K

5 km
Nov
30
Sunday

Tough 10 Turkey Trot

5 mi 10 mi
December 2025
Dec
6
Saturday

TARC Winter Classic

Trail Run 8 mi 32 mi 40 mi
Dec
6
Saturday

Greater Beverly YMCA Reindeer Run 5K

5 km
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