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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

SunTime RunTime - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Brandon Country Park, IP27 0SU
13 Jul 25
£33.00 - £36.00

Rasselbock Marathon and Half Marathon 2025

Mansfield, Nottinghamshire
13 Jul 25
£19.95 - £49.95
4.7

Run Durham Hamsterley Forest Summer 10k/Half

Bishop Auckland, County Durham
13 Jul 25
£24.00 - £29.00

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
13 Jul 25
£30.00 - £162.00
4.2

Newcastle Half Marathon & 10k

Newcastle upon Tyne, Tyne and Wear
13 Jul 25
£30.00 - £132.00

Midweek Medal Madness Run

Wraysbury Skiff & Punting Club, Egham, TW20 0AE
18 Jul 25
£27.00

PHOENIX Fridays - Run for Fun Friday 2025

Walton-on-Thames, Surrey
18 Jul 25
£26.00 - £33.00

Belvoir Castle Triathlon & Mulitsport

Grantham, Belvoir, Leicestershire
19 Jul 25 - 20 Jul 25
£35.00 - £245.00
5.0

Offer

10% OFF

PHOENIX - Pink Elephant Run

Walton-on-Thames, Surrey
19 Jul 25
£22.00 - £40.00

Ciderthon: Half Marathon & 5K

Henley-on-Thames, Hambleden, Buckinghamshire
19 Jul 25
£30.00 - £47.00

My Little Care Bear Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
19 Jul 25
£27.00 - £35.00

Run Whitstable & Herne Bay Summer 5k, 10k and half marathon

Herne Bay, Kent
19 Jul 25
£10.00 - £25.00

Hughenden Valley Half & 10K

High Wycombe, Buckinghamshire
19 Jul 25
£22.00 - £32.00
4.6

Run Aintree 5k, 10k & Half Marathon

Liverpool, Merseyside
20 Jul 25
£28.00 - £152.00
4.6

Birmingham Running Festival 5k, 10k & Half Marathon

Sutton Coldfield, West Midlands
20 Jul 25
£7.00 - £152.00
4.8

Bright Skies Surrey Hills

Denbies Wine Estate, Bradley Lane, Dorking. RH5 6AA
20 Jul 25
£8.70 - £57.51
3.8

Battersea Park Half Marathon

London
20 Jul 25
£37.00 - £162.00
4.8

Belvoir Castle Run Series

Grantham, Belvoir, Leicestershire
20 Jul 25
£35.00 - £65.00

Offer

10% OFF

Richmond Park July 5k,10k and Half Marathon

London, Greater London
20 Jul 25
£22.00 - £25.00
4.4

Race The Estate

Revesby Estate (North), Revesby, Boston. PE22 7NU
20 Jul 25
£14.18 - £58.97

Wye Valley Tunnel Run (Marathon, Half, 10km, Colourburst)

Sedbury, Gloucestershire
20 Jul 25
£10.80 - £59.40
3.8

Great Barrow Challenge Day 1

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
24 Jul 25
£35.00
4.0

The Great Barrow Challenge Day 2

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
25 Jul 25
£35.00
4.0

PHOENIX Fridays - Fellowship of the Run Friday

Walton-on-Thames, Surrey
25 Jul 25
£26.00 - £33.00

Great Barrow Challenge Day 3

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
26 Jul 25
£35.00
4.0

AIRE Marathon & Half Marathon

Piglove By The River, Clarence Rd, Leeds LS10 1EE
27 Jul 25 - 28 Jul 25
£38.42 - £43.73

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
27 Jul 25
£30.00 - £162.00
4.2

Great Barrow Challenge Day 4

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
27 Jul 25
£35.00
4.0

RunThrough Wimbledon Common Half Marathon & 10k

London, Greater London
27 Jul 25
£32.00 - £162.00
4.9

Great Barrow Challenge Day 5

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
28 Jul 25
£35.00
4.0

Great Barrow Challenge Day 6

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
29 Jul 25
£35.00
4.0

Great Barrow Challenge Day 7

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
30 Jul 25
£35.00
4.0

Great Barrow Challenge Day 8

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
31 Jul 25
£35.00
4.0

Midweek Chasing Numbers Aug 2025

Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA
01 Aug 25
£27.00

Great Barrow Challenge Day 9

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
01 Aug 25
£35.00
4.0

Ogwen | Yr Helgi Du Skyline

Betws-Y-Coed, Gwynedd
02 Aug 25
£31.99 - £74.99

Football League Original 12 Run

Milton Keynes, Buckinghamshire
02 Aug 25 - 03 Aug 25
£36.99 - £42.99

Great Barrow Challenge Day 10

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
02 Aug 25
£35.00
4.0

"Run the Raid" Lindisfarne Trail Half Marathon

Berwick-upon-Tweed, Northumberland
03 Aug 25
£28.00 - £35.00

Edinburgh Running Festival

Edinburgh
03 Aug 25
£30.00 - £152.00
Showing 201-240 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.