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Half Marathons 2025 - 2026

Running a good half marathon time is something every runner has on their 'To Do' list. Whether it’s a trail race or a road race, a 13.1 mile half marathon is the natural next step up from 10k, and one of the classic benchmarks to test yourself against. It's long enough to be a true test of fitness, stamina, pacing, form and mental strength but short enough to be within reach of anyone willing to train consistently for a couple of months.

Our database contains everything from small, locally organised half marathons to one of the biggest races on the planet - The Great North Run - which attracts over 50,000 runners and was the first mass participation event on the planet to reach 1 million cumulative participants. The findarace calendar lists over 350 half marathons every year all over the UK and beyond. So whether you’re after a low-key local race or the excitement of a major event, check out our comprehensive 2025 - 2026 calendar below and use the “Refine” button above to fine-tune your search.

Viewing this page in the default “Featured view” will show you all the Best Half Marathons in the UK. 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 :-)

If you’re ready to book, but not race prepared for the big day, check out our Half marathon kit list to ensure you’ve got everything you need.

Half Marathons 2025 - 2026

🚀Boosted

BEWL WATER 10KM, HALF MARATHON & ULTRA 50KM

Tunbridge Wells, Lamberhurst, East Sussex
10 May 25
£37.36 - £66.01
4.5
🚀Boosted

Essar Chester Half Marathon

Chester, Cheshire
18 May 25
£48.80
5.0
🚀Boosted

XTERRA Snowdonia Trail Marathon Eryri, Ultra, Half Marathon & 10k

Caernarfon, Gwynedd
12 Jul 25
£31.99 - £94.99
4.8
🚀Boosted

Run Bournemouth

Bournemouth, Dorset
11 Oct 25 - 12 Oct 25
£15.00 - £44.75
4.5

Media City Half Marathon

Salford, Lancashire
15 Feb 26
£37.00 - £162.00

Richmond Half Marathon Winter

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

Hampton Court Half Marathon 2026

Thames Ditton, Surrey
15 Feb 26
£39.50
4.3

The Butterfly Effect - Birdwing

Heanor, Derbyshire
15 Feb 26
£39.50

Mudfest - February

Swadlincote, Derbyshire
20 Feb 26
£29.00

Dartford Half Marathon

Dartford, Kent
22 Feb 26
£7.00 - £142.00
4.5

Pierrepont Plod - Winter 2026

Nottingham, Nottinghamshire
01 Mar 26
£39.50
5.0

Taunton Half Marathon and Kids Kilometre Fun Run

Taunton Town Centre
01 Mar 26
£8.17 - £39.48

The Rosliston Rumble - Weekend Edition

Swadlincote, Derbyshire
08 Mar 26
£39.50

Kettering Half Marathon & 5k

Kettering, Northamptonshire
08 Mar 26
£26.00 - £34.00

Cheshire Spring Half Marathon

Knutsford, Cheshire
15 Mar 26
£36.00

Moo-rathon, Calf and Hen K

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

The Ultra Loop - Run As Many 5km Loops As You Can in 8 hours

Manchester, Lancashire
21 Mar 26
£34.00
5.0

Hastings Half Marathon

Grosvenor Gardens, Sea Rd, Grosvenor Cres, Saint Leonards-on-sea TN38 0BX
22 Mar 26
£7.61 - £39.03

Surrey Half Marathon

Woking, Surrey
22 Mar 26
£17.00 - £192.00

Kilomathon 13.1k

Edinburgh
29 Mar 26
£27.25 - £29.75
5.0

Gloucester Half Marathon & 10k

Gloucester, Gloucestershire
29 Mar 26
£32.00 - £142.00

ZIG ZAG Challenge - 5k, 10k, Half, Full & Ultra Marathon

Brandon Country Park, IP27 0SU
29 Mar 26
£34.00 - £38.00
5.0

Shakespeare Marathon & Half Marathon

Stratford upon Avon, Warwickshire
26 Apr 26
£38.00 - £182.00
4.9

Zodiac Run

02 Jan 25 - 31 Dec 25
£10.00

Offer

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

Blackpool Festival of Running

Blackpool, Lancashire
26 Apr 25 - 27 Apr 25
£6.00 - £40.00

Shakespeare Marathon & Half Marathon

Stratford upon Avon, Warwickshire
27 Apr 25
£36.00 - £162.00
4.9

The "Other" Run - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
27 Apr 25
£25.00 - £37.50

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

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

Surrey Hills Half Marathon

Guildford, Surrey
27 Apr 25
£20.00

Worthing Runfest Half Marathon & 10K 2025

Worthing, West Sussex
04 May 25
£38.50 - £43.00
4.8

Race to the Base 2025

Assynt Leisure Centre, Lochinver, IV27 4JP
11 May 25
£30.00

Colchester Zoo Stampede 10k

Colchester, Essex
18 May 25
£42.00 - £182.00
5.0

Jaws 50th Anniversary Marathons & Half Marathon

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

The ONE British PB 5k,10k and Half Marathon Run

Guildford, Surrey
26 Jul 25
£25.00 - £35.00

Battersea Park Half Marathon

London
27 Sep 25
£37.00 - £162.00
4.8

Humber Bridge Half Marathon

Hessle, North Humberside
28 Sep 25
£37.00 - £162.00
4.0

BATTERSEA PARK RUNNING FESTIVAL

London
18 Oct 25
£7.00 - £152.00

6 Geese a-laying Run – Virtual

Ross-on-Wye, Herefordshire
12 Dec 25
£25.00 - £39.00

9 Ladies Dancing – Virtual

Ross-on-Wye, Herefordshire
15 Dec 25
£25.00 - £39.00

10 Lords a Leaping – Virtual

Ross-on-Wye, Herefordshire
16 Dec 25
£25.00 - £39.00

Great North West Half Marathon

Blackpool, Lancashire
15 Feb 26
£30.00
4.6
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Half Marathon FAQs

How long is a half marathon?

Half marathon races 21 kilometres, exactly half the distance of a full 26.2 miles. The average finishing time for a half in the UK is around 2:00 hours with more seasoned runners often pushing for 1 hour 30 minutes or less. This makes half marathons the perfect choice for runners looking to step up to a new challenge from 10k races and an important milestone for those on their way to running a full marathon. If you're looking for some inspiration goal setting, find out what a good half marathon time is in our guide.

Can you run a half marathon without training?

While it is physically possible to run a half marathon without training, we really wouldn’t recommend it. From both an enjoyment and health perspective, training correctly before embarking on a half marathon is going to lead you to have a much better experience.

Running a half marathon requires a significant level of endurance, stamina, and physical fitness. Without proper training, you are more likely to experience discomfort, fatigue, and the risk of injuring yourself is much higher. Training allows your body to adapt, get stronger and build stamina - everything you’ll need to enjoy the challenge of a half marathon race. Diet is also important, for more info take a look at our guide on what to eat before a half marathon.

Alternative Half Marathons

Looking for a half marathon you can take part in from anywhere - even indoors? Our virtual runs offer a range of distances and ways to challenge yourself whilst still running solo.

Fancy an active trip away? Check out our Running Holidays page which lists international running trips and breaks.

How many KM is a Half Marathon?

A half marathon is equivalent to 21.0975 kilometres (or approximately 13.1 miles). It is exactly half the distance of a full marathon, which is 42.195 kilometres or 26.2 miles.

If I can run a 10k, can I run a half marathon?

If you can successfully run a 10K (which is approximately 6.2 miles), you can definitely work your way up to running a half marathon. It is roughly twice the distance, so naturally, you’ll need to enhance the stamina and endurance you’ll have already built in running 10 kilometres. Following a structured training plan that allows for rest and increasing distance incrementally is the safest way to build up to the full 13.1 miles.

What types of Half Marathon are there?

There are two main types of Half Marathon events to participate in: Road Races and Trail Runs.

Road Half Marathons are the most traditional and popular type of half marathon. It takes place on paved roads or streets, typically in city or suburban areas with well-planned routes and water stations. Choose from a range of mass-participation Half Marathon events in London, Manchester, Birmingham and many more big cities and towns across the UK. These types of races also often have fantastic routes that pass iconic landmarks and tend to have buzzing crowds cheering runners on.

Trail Half Marathons are held on off-road trails in woodland settings or on hiking trails. They deliver a more scenic and natural experience but tend to be much more demanding due to the variety of terrain and uneven surfaces.