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Half Marathon Calendar near Chelmsford 2025-2026

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Explore the top half marathons near Chelmsford for 2025-2026! We've gathered 26 exciting races in the area. Check out our detailed list below to find your next local race.

March 2026
Mar
22
Sunday

ATW Run Fest at Lee Valley

10 km 13 mi
Mar
22
Sunday

Brentwood Half Marathon

13 mi
April 2026
Apr
19
Sunday

Saltmarsh Half Marathon

13 mi
May 2026
May
31
Sunday

Circuit du Sore Legs

Backyard Ultra 5 km 10 km ... 50 km 6 hr
June 2026
Jun
14
Sunday

Stour Valley Marathon & Half

13 mi 27 mi
Jun
27
Saturday

Zigzag - Cock-A-Doodle Dawdle

Trail Run 5 km 10 km 13 mi 26 mi
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