Half Marathons in Chelmsford 2026 - 2027

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Half Marathons Found In Chelmsford

The most comprehensive list of Half Marathons in and near Chelmsford in 2026 - 2027. Find your perfect race!

The Chelmer and Blackwater Navigation runs from Chelmsford to the coast at Heybridge Basin, just over 13 miles of flat, traffic-free towpath. Running it out and back in sections gives you the kind of long, uninterrupted miles a half marathon training block needs without any navigation decisions to make. Central Park and Admiral's Park are the shorter options in the city centre. Still building fitness? Explore 10K runs in Chelmsford first.

Have a browse through the listings below. Hylands Park is a large estate on the edge of the city that gives you a different kind of run from the towpath, with more space and a parkland character that breaks up the flat miles. Marathons in Chelmsford are there when you're ready to go further.

Looking for more options?

Explore half marathons across the East of England with half marathons in Basildon, half marathons in Bedford or half marathons in Cambridge.

A smiling runner in an orange shirt and number 1973 raises both arms in celebration as he approaches the finish line of a race, with other runners and a cheering crowd in the background.

Colchester, Mile End

Colchester Half Marathon

Sun 14th Mar 2027

Free–£40.00

Boosted

London

Battersea Park 5k, 10k & Half Marathon

Sat 14th Nov

4.7

from £38.00

London

RUN Battersea Park Half Marathon

Sun 15th Nov

4.6

£41.60

£39.95

£39.95

£39.95

£39.95

£39.95

London

Christmas Lights Half Marathon 2026

Mon 23rd Nov 2026 – 4th Jan 2027

£21.00

from £12.00

London

Finsbury Park 5k, 10k & Half Marathon

Sun 29th Nov

4.3

from £30.00

from £36.00

from £34.00

from £36.00

London

Victoria Park Half Marathon, 10k & 5k

Sat 12th Dec

4.7

from £30.00

from £32.86

London

Lee Valley Velo Park - December

Sat 19th Dec

4.7

from £12.00

from £22.00

London

Battersea 5k, 10k & Half Marathon

Sat 9th Jan 2027

4.8

from £36.00

London

Victoria Park Half Marathon, 10k & 5k

Sun 10th Jan 2027

4.7

from £30.00

from £11.00

London

Lee Valley Velo Park

Sat 30th Jan 2027

4.7

from £11.00

London

Battersea Park Half Marathon - Winter

Sun 31st Jan 2027

4.6

£41.60

London

Crystal Palace 5k 10k, Half Marathon & Juniors

Sun 31st Jan 2027

4.7

from £12.00

London

Battersea 5k, 10k & Half Marathon

Sat 13th Feb 2027

4.8

from £36.00

Dartford

Dartford Half Marathon, 10k & Junior

Sun 21st Feb 2027

4.5

from £11.00

from £22.00

London

Victoria Park Half Marathon, 10k & 5k

Sat 27th Feb 2027

4.7

from £30.00

London

London Half & 10k Presented by TREK

Sun 28th Feb 2027

5.0

from £11.00

Buntingford

Moo-rathon, Calf and Hen K

Sat 13th Mar 2027

from £31.00

London

Battersea Park Half Marathon - Spring

Sun 14th Mar 2027

4.6

£41.60

Colchester, Mile End

Colchester Half Marathon

Sun 14th Mar 2027

Free–£40.00

Welwyn Garden City

London Lea Valley Ultra

Sat 20th Mar 2027

from £42.00

Waltham Cross

ATW Run Fest at Lee Valley

Sun 21st Mar 2027

5.0

from £34.98

London

Victoria Park Half Marathon, 10k & 5k

Fri 26th Mar 2027

4.7

from £30.00

London

Battersea 5k, 10k & Half Marathon

Sat 27th Mar 2027

4.8

from £36.00

London

Battersea Park Half Marathon - March 2027

Sun 28th Mar 2027

4.6

£33.11

Stevenage

ATW Stevenage Spring Half Marathon & 10k

Mon 29th Mar 2027

5.0

from £34.98

London

Battersea Park 5k, 10k & Half Marathon

Sat 3rd Apr 2027

from £36.00

London

Victoria Park Half Marathon, 10k & 5k

Sat 10th Apr 2027

4.7

from £30.00

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