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Half Marathons Found In Watford
View all ↓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
🚀Boosted
Hever Castle Run Series
Edenbridge, Kent
Sun 27 Sep 26
£37.63 - £69.88
4.2
🚀Boosted
Thames Meander Autumn
Richmond, Greater London
Sun 04 Oct 26
£37.36 - £58.59
4.1
🚀Boosted
The Hurt
Guildford, Surrey
Sat 10 Oct 26
£31.00 - £35.00
🚀Boosted
Running Tribe Races
Course 1,2,3 are at - Chalfont Park Sports Club Chalfont Park, SL9 0QA. Course 4,5,6,12 are at - Chalfont St. Peter Community Centre , SL9 9QX. Course - 7,8 are at - Amersham Cricket Club, Missenden Rd, Old Amersham, Bucks, HP7 0RN Course - 9 is at - Sarratt Village Hall, The Green, Sarratt,,Nr Rickmansworth, Herts WD3 6AS Course - 10,11 are at - Chesham & District Community Association, White Hill Centre, White Hill, Chesham, Bucks, HP5 1AG.
Sun 25 Oct 26
£40.00
Putney & Fulham Half Marathon
Barn Elms Sports Centre, Queen Elizabeth Walk, London, SW13 0DG
Sun 04 Apr 27
£41.51
4.9
Henley River Half Marathon, 10k & Junior Race
Henley-on-Thames, Oxfordshire
Sat 10 Apr 27
£12.00 - £37.00
4.6
Magna Carta Spring
Wraysbury Skiff & Punting Club Riverside Egham Surrey TW20 0AA
Sat 10 Apr 27
£39.48 - £60.71
Victoria Park Half Marathon, 10k & 5k
London
Sat 10 Apr 27
£30.00 - £38.00
4.7
FINSBURY PARK 5K, 10K & HALF MARATHON
London
Sun 11 Apr 27
£12.00 - £34.00
4.3
Lee Valley Velo Park
London, Greater London
Sat 24 Apr 27
£11.00 - £34.00
4.7
PHOENIX - NOT the London Marathon Run 2027
Walton-on-Thames, Surrey
Sun 25 Apr 27
£39.95
5.0
Victoria Park Half Marathon, 10k & 5k
London
Sat 01 May 27
£30.00 - £38.00
4.7
MK Marathon Weekend
Stadium MK, Stadium Way Milton Keynes, BUCKS MK1 1ST United Kingdom
Sun 02 May 27 - Mon 03 May 27
£13.05 - £181.58
Battersea Park 5k, 10k & Half Marathon
London
Sat 08 May 27
£36.00 - £42.00
Hackney Half Marathon
London
Sun 16 May 27
£35.00 - £80.00
5.0
Goring Gap Trails Festival
Reading, Oxfordshire
Sat 22 May 27 - Sun 23 May 27
£38.00 - £82.00
Circuit Du Sore Legs
Wodson Park Sports Centre, Ware, Herts, SG12 0UQ
Sun 23 May 27
£32.00 - £38.00
Surrey Hills Half Marathon
Guildford, Surrey
Wed 26 May 27
£29.00
5.0
Farmmageddon - 5K, 10K, HALF, FULL, ULTRA MARATHON & challenge events
Hyde Hall Farm, Buntingford, SG9 0RU
Sat 29 May 27 - Sun 30 May 27
£35.00 - £165.00
Star Wars 50th Anniversary Marathon & Half Marathon
Milton Keynes, Buckinghamshire
Sun 06 Jun 27
£46.99 - £54.99
Weybridge 5k, 10k, Half Marathon & Junior Race
Walton-on-Thames, Surrey
Sun 06 Jun 27
£13.00 - £42.00
4.8
Wendover Woods Half Marathon, 10k & 5k
Wendover Woods, Upper Icknield Way, Aston Clinton, HP22 5NQ
Sun 06 Jun 27
£7.32 - £32.42
Finsbury Park 5k, 10k, Half Marathon & Junior Run
London
Sun 20 Jun 27
£11.00 - £34.00
4.3
Lee Valley Velo Park
London, Greater London
Sat 26 Jun 27
£11.00 - £34.00
4.7
Richmond Park Half Marathon
Richmond, Surrey
Sun 27 Jun 27
£40.00
4.4
The Spy who loved me Marathons & Half Marathon
Milton Keynes, Buckinghamshire
Sat 03 Jul 27 - Sun 04 Jul 27
£36.99 - £42.99
Battersea Park 5k, 10k & Half Marathon
London
Sun 04 Jul 27
£36.00 - £42.00
Battersea Park 5k, 10k & Half Marathon
London
Sat 17 Jul 27
£36.00 - £42.00
Formula One Marathons, Half Marathon & 50km
Milton Keynes, Buckinghamshire
Sat 17 Jul 27 - Sun 18 Jul 27
£36.99 - £42.99
Victoria Park Half Marathon, 10k & 5k
London
Sat 31 Jul 27
£30.00 - £38.00
4.7
Premier League Marathon & Half Marathon
Milton Keynes, Buckinghamshire
Sat 07 Aug 27
£38.99 - £42.99
Premier League Marathon & Half Marathon
Milton Keynes, Buckinghamshire
Sun 08 Aug 27
£39.99 - £42.99
Richmond Park Half Marathon
Richmond, Surrey
Sun 15 Aug 27
£40.00
4.4
Lee Valley Velo Park
London, Greater London
Sat 28 Aug 27
£11.00 - £34.00
4.7
Windsor Trail Half Marathon & 10k
Windsor, Berkshire
Sun 29 Aug 27
£37.00 - £44.00
Henley River Half Marathon, 10k & Junior Race
Henley-on-Thames, Oxfordshire
Sat 04 Sep 27
£12.00 - £37.00
4.6
Richmond Park Half Marathon
Richmond, Surrey
Sun 19 Sep 27
£40.00
4.4
Run Reigate 5k, 10k, Half Marathon & Kids Race
Reigate, Surrey
Sun 19 Sep 27
£18.00 - £42.00
4.0
Battersea Park 5k, 10k & Half Marathon
London
Sat 25 Sep 27
£36.00 - £42.00
4.8
Victoria Park Half Marathon, 10k & 5k
London
Sat 09 Oct 27
£30.00 - £38.00
4.7
Hampton Court Palace Running Festival Presented by Voltarol
East Molesey, Greater London
Sun 17 Oct 27
£42.00 - £47.00
4.2
Lee Valley Velo Park
London, Greater London
Sat 30 Oct 27
£11.00 - £34.00
4.7
Richmond Park Half Marathon
Richmond, Surrey
Sun 31 Oct 27
£40.00
4.4
Hertfordshire Half Marathon & 10k
Knebworth, Hertfordshire
Sun 07 Nov 27
£33.00 - £38.00
4.5
Showing 161-200 of 212 results