Half Marathons in Watford 2026 - 2027

222

Half Marathons Found In Watford

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

If you've been putting in miles along the Grand Union Canal towpath or through Cassiobury Park, you'll know that Watford is flatter than most of Hertfordshire, and that makes a difference at the half marathon distance. Thirteen miles on forgiving ground is a different proposition to thirteen miles with hills in the way, and Watford gives you a fair shot at a time you'll actually be pleased with. It's one of the better spots in the region if a PB is what you're after. If you'd rather build up first, 10k runs in Watford are a good place to start.

Have a look and pick one that works with your training. When the half marathon feels comfortable and you want to know what 26.2 feels like, marathons in Watford are the next step up.

Looking for more options?

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

A group of runners, some smiling and reaching out playfully, participate in a race along a tree-lined trail. The atmosphere is lively and cheerful. Bib numbers are visible on their shirts.

Kingston upon Thames

Kingston Half Marathon

Sun 22nd Nov

3.5

£40.45

Boosted
Two men are running on a grassy trail; one wears a blue athletic outfit, the other wears an orange shirt and a Santa hat. Both are smiling and appear to be participating in an outdoor event or fun run.

Gerrards Cross

Running Tribe

Sat 28th Nov

£40.00

Boosted

London

Battersea Park 5k, 10k & Half Marathon

Sat 14th Nov

4.7

from £38.00

Walton-on-Thames

PHOENIX - Wild Goose Chase

Sat 14th Nov

from £22.00

Walton-on-Thames

PHOENIX - Chicken Run

Sun 15th Nov

from £22.00

Staines

The Smurf Run

Sun 15th Nov

from £18.00

London

RUN Battersea Park Half Marathon

Sun 15th Nov

4.6

£41.60

Staines

Run For Your Life

Sat 21st Nov

from £18.00

Windsor

Thames Path Trail Run

Sat 21st Nov

from £37.50

Kingston upon Thames

Kingston Half Marathon

Sun 22nd Nov

3.5

£40.45

London

Wimbledon 10k & Half Marathon

Sun 22nd Nov

4.8

from £34.00

London

Christmas Lights Half Marathon 2026

Mon 23rd Nov 2026 – 4th Jan 2027

£21.00

Guildford

The STAR Backyard PEASLAKE

Fri 27th Nov

from £20.00

Walton-on-Thames

PHOENIX - Riverside Marathon & Half Marathon

Sat 28th Nov

4.5

£33.50

Gerrards Cross

Running Tribe

Sat 28th Nov

£40.00

from £12.00

Walton-on-Thames

PHOENIX - Christmas Advent Run

Sun 29th Nov

from £22.00

Staines

The Donut Dash

Sun 29th Nov

from £18.00

from £15.00

London

Finsbury Park 5k, 10k & Half Marathon

Sun 29th Nov

4.3

from £30.00

from £36.00

Walton-on-Thames

PHOENIX - Christmas Gonk

Sat 5th Dec

from £22.00

from £18.00

from £34.00

Staines

The Christmas Jumper Jaunt

Fri 11th Dec

from £18.00

Walton-on-Thames

PHOENIX - Candy Cane Run

Sat 12th Dec

from £22.00

from £36.00

London

Victoria Park Half Marathon, 10k & 5k

Sat 12th Dec

4.7

from £30.00

Gerrards Cross

Running Tribe

Sat 12th Dec

£40.00

Richmond

Richmond Park Half Marathon & 10k

Sun 13th Dec

4.4

£40.00

from £32.86

London

Lee Valley Velo Park - December

Sat 19th Dec

4.7

from £12.00

from £22.00

from £49.99

Staines

Christmas Day Cracker Run 2026

Fri 25th Dec

from £18.00

Egham

Boxing Day Challenge

Sat 26th Dec

from £27.00

Staines

Year End Time Turner 2026

Sun 27th Dec

4.0

from £18.00

from £22.00

Walton-on-Thames

PHOENIX - Year End Marathon & Half Marathon

Mon 28th Dec

5.0

£33.50

Walton-on-Thames

PHOENIX - Frozen Phoenix

Tue 29th Dec

from £27.00

Walton-on-Thames

PHOENIX - Winter Runderland

Wed 30th Dec

4.0

from £27.00

Staines

New Years Day Run 2027

Fri 1st Jan 2027

5.0

from £18.00

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