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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

ATW Bedford Running Festival

Russell Park, The Embankment, Bedford MK40 3RH
06 Sep 25 - 07 Sep 25
£12.72 - £42.40

The Hardwick Hobble – Autumn - 2025

Chesterfield, Derbyshire
06 Sep 25
£39.50
5.0

Andover Trail Marathon & Half

Kings road, Enham Alamien, Andover, SP11 6HP. Post code is for the car park. ​
06 Sep 25
£35.00 - £45.00
4.8

Birmingham Running Festival 5k, 10k & Half Marathon

Sutton Coldfield, West Midlands
07 Sep 25
£7.00 - £152.00
4.8

FEAR (Forget Everything And Run) - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Brandon Country Park, IP27 0SU
07 Sep 25
£33.00 - £36.00

Blackdown Hills 10K & Half marathon

Taunton Racecourse, Orchard Portman, Taunton, Somerset, TA3 7BL
07 Sep 25
£29.39 - £35.24
5.0

Richmond Park September 5k, 10k and Half Marathon

London, Greater London
07 Sep 25
£22.00 - £25.00
4.4

Wolverhampton Half Marathon & 10k

Wolverhampton, West Midlands
07 Sep 25
£30.00 - £40.00

RunThrough Wimbledon Common Half Marathon & 10k

London, Greater London
07 Sep 25
£32.00 - £162.00
4.9

Great North Run

Newcastle upon Tyne, Tyne and Wear
07 Sep 25
£35.00
4.3

Westonbirt Arboretum Half Marathon, 10km, 5km & Fun Run

Tetbury, Gloucestershire
07 Sep 25
£8.10 - £45.36
4.3

Run2Paris September 2025

London
10 Sep 25 - 14 Sep 25
£950.00

Midweek Chasing Numbers September

Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA
12 Sep 25
£27.00

PHOENIX Fridays - Flying Feet Friday 2025

Walton-on-Thames, Surrey
12 Sep 25
£26.00 - £33.00

Coronation Scot Marathons & Half Marathon

Milton Keynes, Buckinghamshire
13 Sep 25 - 14 Sep 25
£34.99 - £42.99

Bewl Water Autumn

Wadhurst
13 Sep 25
£37.36 - £66.01
4.5

Easier Said Than Run - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Bawsey Country Park, PE32 1EP
13 Sep 25
£35.00 - £38.00
5.0

Worcester City Runs 2025

Worcester, Worcestershire
14 Sep 25
£8.00 - £38.50
5.0

The River Run

Shoreham-by-Sea, West Sussex
14 Sep 25
£32.00 - £214.20

PHOENIX - Dragon's Eye Race 2

Cranleigh, Surrey
14 Sep 25
£27.00 - £40.00
5.0

Cheshire Half Marathon

Macclesfield, Cheshire
14 Sep 25
£36.00 - £172.00
4.8

The Amazing Northampton Run

Northampton, Northamptonshire
14 Sep 25
£16.00 - £78.75
5.0

DERBYSHIRE DALES TRAIL RUN

Bakewell, Derbyshire
14 Sep 25
£35.00 - £40.00

Richmond Half Marathon @ Richmond RUNFEST

Richmond, Greater London
14 Sep 25
£35.00
5.0

Cheshire 3 Peaks Half Marathon

Tegg’s Nose Country Park
14 Sep 25
Free - £38.95

Bumble Bee Challenge Day 1

Exmouth, Devon
20 Sep 25
£34.00

Fraggle Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
20 Sep 25
£27.00 - £35.00

The Lucky Horseshoe Challenge - 5k, 10k, half marathon, full marathon, ultra

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

Richmond Park Half Marathon

London
21 Sep 25
£42.00 - £182.00
4.4

Winchester Half Marathon

Winchester City Centre
21 Sep 25
£10.82 - £40.53
5.0

Ouse Valley Way Marathon and Half Marathon

Huntingdon, Cambridgeshire
21 Sep 25
£27.00 - £41.00

Bumble Bee Challenge Day 2

Exmouth, Devon
21 Sep 25
£34.00

Run Reigate 5k, 10k, Half Marathon & Kids Race

Reigate, Surrey
21 Sep 25
£19.00 - £44.00

PHOENIX Fridays - The Run and Only Friday 2025

Walton-on-Thames, Surrey
26 Sep 25
£26.00 - £33.00

PHOENIX - Hot Lips Run

Walton-on-Thames, Surrey
27 Sep 25
£22.00 - £40.00

Ladybower Reservoir Trails 54k

Hope Valley, Derbyshire
27 Sep 25
£82.00 - £362.00

RUN DORNEY 5K, 10K & HALF MARATHON

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

Harrold-Odell Country Park - 25km & 50km Trail Races

Bedford, Bedfordshire
27 Sep 25
£46.00 - £63.00

Street Child - Craft Half

London
28 Sep 25
£40.00

Delamere Forest Half Marathon & 10K Wildwood Trail Series

Northwich, Cheshire
28 Sep 25
£22.00 - £32.00
Showing 281-320 of 492 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.