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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

Rasselbock Marathon and Half Marathon 2025

Mansfield, Nottinghamshire
13 Jul 25
£19.95 - £49.95
4.9
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Belvoir Castle Run Series

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

Offer

10% OFF

🚀Boosted

Run Bournemouth

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

FA Cup Run

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

Bell Challenge - Day 6

Exmouth, Devon
03 Jan 26
£35.00

Bell Challenge - Day 7

Exmouth, Devon
04 Jan 26
£35.00

The Rasselbock Run - Winter 2026 - Day One

Mansfield, Nottinghamshire
10 Jan 26
£39.50
5.0

PHOENIX - Doughnut Dash

Sunbury on Thames, Middlesex
11 Jan 26
£39.95
5.0

WTF - Where's The Finish? - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Brandon Country Park, IP27 0SU
11 Jan 26
£34.00 - £38.00
4.0

Central Lancashire New Year Half Marathon

Preston, Lancashire
11 Jan 26
£30.00
5.0

Birmingham Running Festival

Sutton Coldfield, West Midlands
11 Jan 26
£7.00 - £152.00
4.8

The Rasselbock Run - Winter 2026 - Day Two

Mansfield, Nottinghamshire
11 Jan 26
£39.50
5.0

Newcastle 10k

Newcastle upon Tyne, Tyne and Wear
17 Jan 26
£32.00 - £142.00
5.0

Windmill Way Wander - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
17 Jan 26
£27.00 - £38.00
4.8

The Rise From The Ashes Run - North

Durham Amateur Rowing Club, Green Ln, Old Elvet, Durham, DH1 3JU
18 Jan 26
£27.00

PAGAN TRAILS

Newton Abbot, Devon
24 Jan 26
£50.00 - £80.00

The Clumber Lakeside – Winter 2026 – Day One

Worksop, Nottinghamshire
24 Jan 26
£39.50

Spice Up Your Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
24 Jan 26
£27.00 - £35.00

The Clumber Lakeside - Winter 2026 - Day Two

Worksop, Nottinghamshire
25 Jan 26
£39.50

Moors Valley Wildwood Trail Series Half Marathon & 10K

Ringwood, Hampshire
25 Jan 26
£22.00 - £32.00

Chepstow Running Festival

Chepstow, Monmouthshire
25 Jan 26
£28.00 - £142.00
4.3

Warwick Half Marathon

Warwick, Warwickshire
01 Feb 26
£12.00 - £212.00
4.9

The Hardwick Hobble – Winter 2026: Day 1

Chesterfield, Derbyshire
07 Feb 26
£39.50
5.0

The One in the Woods - Henley

Henley-on-Thames
08 Feb 26
£10.00 - £35.00
4.5

Run for Cake - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Ferry Meadows, Ham Lane, Peterborough, PE2 5UU
08 Feb 26
£34.00 - £38.00
5.0

Birmingham Running Festival 5k, 10k & Half Marathon

Sutton Coldfield, West Midlands
08 Feb 26
£7.00 - £152.00
4.8

The Hardwick Hobble – Winter 2026: Day 2

Chesterfield, Derbyshire
08 Feb 26
£39.50
5.0

Valentines Challenge - 5k, 10k, Half Marathon, Full and Ultra

Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX
14 Feb 26
£35.00 - £38.00

RunThrough USA Long Beach 5k,10k & Half Marathon Race Weekend

Long Beach, Los Angeles
14 Feb 26 - 15 Feb 26
£32.00 - £44.00

Smurf Run - North

Durham Amateur Rowing Club, Green Ln, Old Elvet, Durham, DH1 3JU
15 Feb 26
£27.00

Media City Half Marathon

Salford, Lancashire
15 Feb 26
£38.00 - £172.00

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

Great North West Half Marathon

Blackpool, Lancashire
15 Feb 26
£30.00
4.6

Mudfest - February

Swadlincote, Derbyshire
20 Feb 26
£29.00

Dune marathon Morocco

الطاوس, الراشدية
20 Feb 26
£31.00
5.0

Dartford Half Marathon

Dartford, Kent
22 Feb 26
£12.00 - £142.00
4.5

Thetford Festival of Running - 5k, 10k, Half Marathon, Full & Ultra Marathon

High Lodge, Thetford Forest, Brandon, IP27 0AF
22 Feb 26
£29.00 - £38.00

HAMELDOWN HAMMER

Newton Abbot, Devon
28 Feb 26
£38.00 - £82.00
5.0

Pierrepont Plod - Winter 2026

Nottingham, Nottinghamshire
01 Mar 26
£39.50
4.9

St David's Day Dragon Run 2026

Dare Valley Country Park, Dare, Aberdare, Wales, CF44 7PS
01 Mar 26
£27.00 - £35.00

Taunton Half Marathon and Kids Kilometre Fun Run

Taunton Town Centre
01 Mar 26
£8.17 - £42.13
Showing 401-440 of 515 results

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.