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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

NOTTINGHAM RUNNING FESTIVAL - 5k, 10k, Half Marathon & Juniors

Nottingham, Nottinghamshire
03 Aug 25
£7.00 - £142.00
5.0

RUNNING GP BEDFORD AUTODROME

Bedford, Bedfordshire
03 Aug 25
£30.00 - £152.00
4.7

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
09 Aug 25
£30.00 - £162.00
4.2

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

Leeds, West Yorkshire
09 Aug 25
£34.00

Brecon Beacons Trails

Brecon, Talybont-on-Usk, Powys
09 Aug 25
£37.00 - £352.00

PHOENIX - The Painted Cow Run

Dorking, Surrey
09 Aug 25
£22.00 - £39.95

Great British Bake Run

The Last Hop, Unit 2, Thames Edge, 15-18 Clarence St, Staines TW18 4SU
09 Aug 25
£27.00 - £35.00
4.5

The Pierrepont Plod - Summer 2025

Nottingham, Nottinghamshire
10 Aug 25
£39.50
5.0

Richmond Park Half Marathon

London
10 Aug 25
£42.00 - £182.00
4.4

Windmill Half Marathon

Lytham St Annes, Lancashire
10 Aug 25
£30.00

The Drop - Glasgow

Ocho, 8 Speirs Wharf, Glasgow G4 9TB
10 Aug 25
£48.44 - £53.80

PHOENIX - Prosecco Run

Dorking, Surrey
10 Aug 25
£22.00 - £39.95
5.0

Solihull Half Marathon & 10k

Solihull, West Midlands
10 Aug 25
£7.00 - £182.00
4.5

Midweek Medal Madness Run August

Wraysbury Skiff & Punting Club, Egham, TW20 0AE
15 Aug 25
£27.00

Chepstow Running Festival 5k, 10k & Half Marathon

Chepstow, Gwent
16 Aug 25
£28.00 - £142.00
4.3

You Crazy Fool Run

The Last Hop, Unit 2, Thames Edge, 15-18 Clarence St, Staines TW18 4SU
17 Aug 25
£27.00 - £35.00

Scottish Half Marathon

Tranent, East Lothian Council
17 Aug 25
£42.75 - £45.25
5.0

Medal Madness - Summer 2025

Heanor, Derbyshire
17 Aug 25
£29.00
5.0

The Frome Running Festival 5k, 10k & Half Marathon

Frome, Somerset
17 Aug 25
£30.00 - £142.00

Clacton Half Marathon & 10k

Seafront opposite Fourth Avenue, Clacton-on-Sea, Essex, CO15 5BL
17 Aug 25
£7.61 - £31.68

Two Tunnels Railway Races (Ultra, Marathon, Half Marathon, 10km, 5km, Colourburst)

Bath, Bath and North East Somerset
17 Aug 25
£10.80 - £81.00
4.6

Leeds Running Festival August

Leeds, West Yorkshire
17 Aug 25
£26.00 - £152.00
4.8

Richmond Park August 5k, 10k and Half Marathon

London, Greater London
17 Aug 25
£22.00 - £25.00
4.4

PHOENIX - Summer Marathon & Half Marathon

Sunbury on Thames, Middlesex
23 Aug 25
£33.50

LEE VALLEY VELOPARK 1 MILE, 5K, 10K, 10 MILE & HALF MARATHON

London, Greater London
23 Aug 25
Free - £122.00
4.6

Derby Running Festival 2024

Derby, Derbyshire
24 Aug 25
£26.00 - £142.00
5.0

THE BATTLEFIELD RUN – NASEBY

Northampton, Northamptonshire
24 Aug 25
£28.00 - £38.00
5.0

Fleetwood Half Marathon

Fleetwood, Lancashire
24 Aug 25
£30.00

PHOENIX - Area 50-Run

Walton-on-Thames, Surrey
24 Aug 25
£22.00 - £40.00

PHOENIX - 2 Weird 2 Run

Walton-on-Thames, Surrey
25 Aug 25
£22.00 - £40.00

Something Wild Festival

Hope Cove, Kingsbridge, Devon, TQ7 3HW
29 Aug 25 - 31 Aug 25
£10.82 - £85.11

Belvoir Castle Half Marathon, 10k and 5k

Grantham, Lincolnshire
30 Aug 25
£20.00 - £40.00

Lucky Clover - 5k, 10k, Half marathon, Full or Ultra

Suffolk Running Centre, IP29 5AX
30 Aug 25
£25.00 - £37.50

Henley River 10k & Half Marathon

Henley-on-Thames, Oxfordshire
30 Aug 25
£30.00 - £142.00
4.5

Will Run For Ice Cream - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
30 Aug 25
£27.00 - £35.00

CARSINGTON WATER HALF MARATHON & 10K

Derbyshire
30 Aug 25
£28.00 - £132.00

Northstowe Festival of Running 2025

Cambridge, Cambridgeshire
30 Aug 25
£15.00 - £30.00
5.0

Running GP Oulton Park Races & Duathlon

Tarporley, Cheshire West and Chester
31 Aug 25
£30.00 - £162.00

SOUTHAMPTON RUNNING FESTIVAL

Southampton, Hampshire
31 Aug 25
£7.00 - £285.60
4.8

ATW Bedford Running Festival

Russell Park, The Embankment, Bedford MK40 3RH
06 Sep 25 - 07 Sep 25
£12.72 - £42.40
Showing 241-280 of 496 results
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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.