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Half Marathons Found In & Near Hertfordshire

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Half Marathons In & Near Hertfordshire 2025 - 2026

The most comprehensive list of Half Marathons in and near Hertfordshire in 2025 - 2026. Find your perfect race!

Top Tip: Viewing this page in the default “Featured view” will show you all the Best Half Marathons in and around Hertfordshire. If you’re ready to set yourself a challenge right now then switching to “Bookable view” will show you those that can be booked instantly and securely through Find A Race. Guarantee your place today and get training :-)


Race Calendar: Half Marathons In & Near Hertfordshire

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The Milton Keynes 1.5k, 5k & 10k MoRun

Milton Keynes
23 Nov 25
£11.00 - £22.00
5.0

Run the Wild Half Marathon - Autumn

Tring, Hertfordshire
11 Oct 25
£50.00
5.0

Richmond Park Half Marathon

London
12 Oct 25
£42.00 - £182.00
4.4

Back to the Future 40th Anniversary Marathons & Half Marathons

Milton Keynes, Buckinghamshire
18 Oct 25 - 19 Oct 25
£36.99 - £42.99

Richmond Park October 5k, 10k and Half Marathon

London
19 Oct 25
£25.00 - £30.00
4.4

LEE VALLEY VELOPARK - MILE, 5K, 10K, 10 MILE & HALF MARATHON

London, Greater London
25 Oct 25
Free - £122.00
4.6

Epping Forest Wildwood Trail Series Half Marathon & 10K

London
25 Oct 25
£24.00 - £34.00

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

London
02 Nov 25
£11.00 - £27.00
5.0

Wendover Woods Marathon, Half Marathon & 10k

Wendover Woods, Upper Icknield Way, Aston Clinton, HP22 5NQ
02 Nov 25
£6.65 - £48.96

Richmond Half Marathon Autumn

Old Deer Park - Richmond Upon Thames TW9 2SF
02 Nov 25
£41.51

Hertfordshire Half Marathon & 10k

Knebworth, Hertfordshire
02 Nov 25
£32.00 - £172.00
4.5

Enigma Fireworks Marathons & Half Marathons

Milton Keynes, Buckinghamshire
07 Nov 25 - 08 Nov 25
£34.99 - £43.99

VICTORIA PARK 5K, 10K & HALF MARATHON

London
08 Nov 25
£28.00 - £162.00
4.6

The One by the Canal

Watford, Hertfordshire
09 Nov 25
£35.00
4.5

Richmond Park Half Marathon

London
09 Nov 25
£42.00 - £182.00
4.4

Battersea Park Half Marathon

London
15 Nov 25
£37.00 - £162.00
4.8

The One in the Park - Richmond - November

Richmond
30 Nov 25
£26.00 - £35.00
5.0

FINSBURY PARK 5K, 10K & HALF MARATHON

London
30 Nov 25
£30.00 - £142.00
4.3

Gremlins Christmas Half & Marathons

Milton Keynes, Buckinghamshire
05 Dec 25 - 06 Dec 25
£36.99 - £44.99

Deja Vu Marathon & Half Marathon

Milton Keynes, Buckinghamshire
07 Dec 25
£34.99 - £43.99

Richmond Park Half Marathon

London
07 Dec 25
£42.00 - £182.00
4.4

VICTORIA PARK 5K, 10K & HALF MARATHON

London
13 Dec 25
£28.00 - £162.00
4.6

Richmond Park December 5k,10k and Half Marathon

London, Greater London
14 Dec 25
£25.00 - £30.00
4.4

LEE VALLEY VELOPARK - MILE, 5K, 10K, 10 MILE & HALF MARATHON

London, Greater London
20 Dec 25
Free - £122.00
4.6

Die Hard Christmas Jumpers Marathon & Half Marathon

Milton Keynes, Buckinghamshire
24 Dec 25
£36.99 - £44.99

FA Cup Run

Milton Keynes, Buckinghamshire
03 Jan 26 - 04 Jan 26
£36.99 - £42.99

Richmond Half Marathon Winter

Old Deer Park - Richmond Upon Thames TW9 2SF
15 Feb 26
£41.51

Moo-rathon, Calf and Hen K

Hyde Hall Farm, Buntingford, SG9 0RU
21 Mar 26
£29.00 - £36.00
5.0

Zodiac Run

02 Jan 25 - 31 Dec 25
£10.00

Offer

Thanks for booking a Running Bug event through findarace.com - 10% OFF

Richmond Park April 5k, 10k and Half Marathon Run

London, Greater London
27 Apr 25
£25.00 - £30.00
4.4

Jaws 50th Anniversary Marathons & Half Marathon

Milton Keynes, Buckinghamshire
05 Jul 25
£39.99 - £49.99

BATTERSEA PARK RUNNING FESTIVAL

London
18 Oct 25
£7.00 - £152.00
Showing 41-71 of 71 results
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Related Pages on Find A Race

If you still haven’t found what you’re looking for here are a few suggestions: broaden your search and take a look at the South East or South West of England if you’re willing and able to travel a bit further. If you’re in the Hertfordshire area but fancy something a bit shorter then check out our Hertfordshire 10k Runs page. If you’re happy to travel or you want to build a race into a trip away then check out our UK-wide Half Marathons calendar and you can refine and filter your search from there.