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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

Richmond Park Half Marathon

London
07 Dec 25
£42.00 - £182.00
4.4

Bauble Bimble - 5k,10k, Half Marathon, Full Marathon & Ultra-marathon

Ferry Meadows, Ham Lane, Peterborough, PE2 5UU
07 Dec 25
£33.00 - £36.00

Deja Vu Marathon & Half Marathon

Milton Keynes, Buckinghamshire
07 Dec 25
£34.99 - £43.99

Running GP at Goodwood Motor Circuit – December

Chichester, West Sussex
07 Dec 25
£30.00 - £162.00
4.5

RUN DORNEY 5K, 10K & HALF MARATHON

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

VICTORIA PARK 5K, 10K & HALF MARATHON

London
13 Dec 25
£28.00 - £162.00
4.6

Twas The Run Before Christmas - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon

Brandon Country Park, IP27 0SU
14 Dec 25
£33.00 - £36.00
4.5

CRYSTAL PALACE 5K 10K, HALF MARATHON & JUNIORS

London
14 Dec 25
£7.00 - £122.00
4.6

Richmond Park December 5k,10k and Half Marathon

London, Greater London
14 Dec 25
£25.00 - £30.00
4.4

Run Aintree 5k, 10k & Half Marathon

Liverpool, Merseyside
14 Dec 25
£28.00 - £152.00
4.6

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

London, Greater London
20 Dec 25
Free - £122.00
4.6

Christmas Canter - 5k, 10k, Half, Full or Ultra Marathon

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

Birmingham Running Festival 5k, 10k & Half Marathon

Sutton Coldfield, West Midlands
21 Dec 25
£7.00 - £152.00
4.8

Die Hard Christmas Jumpers Marathon & Half Marathon

Milton Keynes, Buckinghamshire
24 Dec 25
£36.99 - £44.99

Boxing Day Challenge

Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA
26 Dec 25
£30.00

PHOENIX - Year End Marathon & Half Marathon

Sunbury on Thames, Middlesex
28 Dec 25
£33.50
5.0

PHOENIX - Frozen Phoenix

Sunbury on Thames, Middlesex
29 Dec 25
£27.00 - £40.00

Bell Challenge - Day 1

Exmouth, Devon
29 Dec 25
£35.00

Bell Challenge - Day 2

Exmouth, Devon
30 Dec 25
£35.00

PHOENIX - Winter Runderland

Sunbury on Thames, Middlesex
30 Dec 25
£27.00 - £40.00
4.0

Bell Challenge - Day 3

Exmouth, Devon
31 Dec 25
£35.00

Bell Challenge - Day 4

Exmouth, Devon
01 Jan 26
£35.00

Bell Challenge - Day 5

Exmouth, Devon
02 Jan 26
£35.00

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

The Rasselbock Run - Winter 2026 - Day Two

Mansfield, Nottinghamshire
11 Jan 26
£39.50
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 Clumber Lakeside – Winter 2026 – Day One

Worksop, Nottinghamshire
24 Jan 26
£39.50

The Clumber Lakeside - Winter 2026 - Day Two

Worksop, Nottinghamshire
25 Jan 26
£39.50

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

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

Media City Half Marathon

Salford, Lancashire
15 Feb 26
£37.00 - £162.00
Showing 401-440 of 477 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.