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Half Marathons Found In Watford

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Half Marathons in Watford 2026 - 2027

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.

Race Calendar: Half Marathons Found In Watford

The Hurt

Guildford, Surrey
Sat 10 Oct 26
£31.00 - £35.00

Run the Wild Half Marathon - Autumn

Tring, Hertfordshire
Sat 10 Oct 26
£59.00
5.0

Epping Forest Half Marathon & 10K Wildwood Trail Series

London
Sat 10 Oct 26
£24.00 - £34.00

Hampton Court Palace Running Festival Presented by Voltarol

East Molesey, Greater London
Sun 11 Oct 26
£42.00 - £47.00
4.2

Lee Valley Velo Park - October

London, Greater London
Sat 17 Oct 26 - Sat 24 Oct 26
£12.00 - £34.00
4.7

Richmond Park Half Marathon

Richmond, Surrey
Sun 18 Oct 26
£40.00
4.4

Windsor Dorney Lakeside Half Marathon

Dorney Lake, Off Court Lane, Windsor, Berks, SL4 6QP
Sun 18 Oct 26
£36.21

Henley Half Marathon

Henley-on-Thames, Oxfordshire
Sun 18 Oct 26
£10.00 - £40.00
4.9

BATTERSEA PARK RUNNING FESTIVAL

London
Sat 24 Oct 26
£12.00 - £47.00
4.5

Scare Bear Run 2026

The Last Hop, Unit 2, Thames Edge Court, Clarence Street, Staines, TW18 4SU
Sat 24 Oct 26
£18.00 - £35.00

River Thames Half Marathon 2026

Walton-on-Thames, Surrey
Sun 25 Oct 26
£39.50
4.8

Running Tribe Races

Course 1,2,3 are at - Chalfont Park Sports Club Chalfont Park, SL9 0QA. Course 4,5,6 are at - Chalfont St. Peter Community Centre , SL9 9QX.
Sun 25 Oct 26
£38.69

Maidenhead Half Marathon & 10k

Maidenhead, Berkshire
Sun 25 Oct 26
£32.00 - £40.00
5.0

Wendover Woods Marathon, Half Marathon & 10k

Wendover Woods, Upper Icknield Way, Aston Clinton, HP22 5NQ
Sun 01 Nov 26
£7.68 - £50.00
4.6

Richmond Half Marathon Autumn

Old Deer Park - Richmond Upon Thames TW9 2SF
Sun 01 Nov 26
£41.51

Run London Victoria Park Half/10k/5k

London
Sun 01 Nov 26
£15.00 - £30.00
1.1

ATW Bedford 10k & Half Marathon

Russell Park, Bedford, Bedfordshire, MK40 3RH
Sun 01 Nov 26
£34.98 - £43.46
5.0

Hertfordshire Half Marathon & 10k

Knebworth, Hertfordshire
Sun 01 Nov 26
£40.00 - £47.00
4.5

We Will Remember Poppy Run

The Last Hop, Unit 2, Thames Edge Court, Clarence Street, Staines, TW18 4SU
Fri 06 Nov 26
£18.00 - £20.00

PHOENIX - Lancaster Bomber Run

Walton-on-Thames, Surrey
Fri 06 Nov 26
£22.00 - £40.00

Enigma Fireworks Marathons & Half Marathons

Milton Keynes, Buckinghamshire
Fri 06 Nov 26 - Sat 07 Nov 26
£34.99 - £41.99

PHOENIX - Lest We Forget

Walton-on-Thames, Surrey
Sat 07 Nov 26
£22.00 - £39.95
5.0

Victoria Park Half Marathon, 10k & 5k

London
Sat 07 Nov 26
£30.00 - £38.00
4.7

Remembrance Run 2026 - South

Wraysbury Skiff and Punting Club, Riverside, Egham, TW20 0AE
Sun 08 Nov 26
£23.00 - £37.00

Windsor Trail Run

Windsor, Berkshire
Sun 08 Nov 26
£37.00 - £44.00

PHOENIX - Remembrance Day Marathon & Half Marathon

Walton-on-Thames, Surrey
Sun 08 Nov 26
£39.95

Run Dorney Lake Half Marathon, 10k & 5k - November

Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Sun 08 Nov 26
£29.68 - £36.04
4.4

London 1.5k, 5k, 10k and Half Marathon MoRun

London
Sun 08 Nov 26
£12.00 - £30.00
5.0

Battersea Park 5k, 10k & Half Marathon

London
Sat 14 Nov 26
£40.00
4.7

The Smurf Run

Wraysbury Skiff and Punting Club, Riverside, Egham, TW20 0AE
Sun 15 Nov 26
£18.00 - £35.00

THAMES PATH TRAIL RUN

Windsor, Berkshire
Sat 21 Nov 26
£37.50 - £42.50

Kingston Half Marathon

Kingston upon Thames, Surrey
Sun 22 Nov 26
£40.45

WIMBLEDON 10K & HALF MARATHON

London
Sun 22 Nov 26
£34.00 - £38.00
4.5

Christmas Lights Half Marathon 2026

London, Greater London
Mon 23 Nov 26 - Mon 04 Jan 27
£21.00

The STAR Backyard PEASLAKE

Peaslake Community Hall, Peaslake, Surrey, GU5 9RR
Fri 27 Nov 26
£20.00 - £50.00

Running Tribe Races

Course 1,2,3 are at - Chalfont Park Sports Club Chalfont Park, SL9 0QA. Course 4,5,6 are at - Chalfont St. Peter Community Centre , SL9 9QX.
Sat 28 Nov 26
£38.69

PHOENIX - Riverside Marathon & Half Marathon

Walton-on-Thames, Surrey
Sat 28 Nov 26
£33.50
4.5

The London Riverside 1.5k, 10k and Half marathon MoRun

Richmond, Surrey
Sun 29 Nov 26
£12.00 - £30.00

PHOENIX - Christmas Advent Run

Walton-on-Thames, Surrey
Sun 29 Nov 26
£22.00 - £39.95

The Donut Dash

The Last Hop, Unit 2, Thames Edge Court, Clarence Street, Staines, TW18 4SU
Sun 29 Nov 26
£18.00 - £35.00
Showing 81-120 of 195 results