Half Marathons Found
View all ↓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.
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Half Marathons 2025 - 2026
Belvoir Castle Run Series
Grantham, Belvoir, LeicestershireOffer
10% OFF
THE BATTLEFIELD RUN – NASEBY
Northampton, NorthamptonshireRun Bournemouth
Bournemouth, DorsetRun the Thames Bridges - half marathon
LondonRun the Ghost Tubes - Half Marathon & 10K
LondonHenry VIII's Wives Half Marathon
LondonSwan Challenge
Coombe Abbey ParkXTERRA Snowdonia Trail Marathon Eryri, Ultra, Half Marathon & 10k
Caernarfon, GwyneddLive Aid 40th Anniversary Marathon Half Marathon & 50km
Milton Keynes, BuckinghamshirePHOENIX - Manta Ray Run
Walton-on-Thames, SurreySunTime RunTime - 5k,10k, Half Marathon, Full Marathon & Ultra-Marathon
Brandon Country Park, IP27 0SULudlow10
Ludlow, ShropshireRun Durham Hamsterley Forest Summer 10k/Half
Bishop Auckland, County DurhamRUN DORNEY 5K, 10K & HALF MARATHON
Windsor, BerkshireNewcastle Half Marathon & 10k
Newcastle upon Tyne, Tyne and WearMidweek Medal Madness Run
Wraysbury Skiff & Punting Club, Egham, TW20 0AEPHOENIX Fridays - Run for Fun Friday 2025
Walton-on-Thames, SurreyBelvoir Castle Triathlon & Mulitsport
Grantham, Belvoir, LeicestershireOffer
10% OFF
PHOENIX - Pink Elephant Run
Walton-on-Thames, SurreyMy Little Care Bear Run - Wales
Dare Valley Country Park, Aberdare, CF44 7PSRun Whitstable & Herne Bay Summer 5k, 10k and half marathon
Herne Bay, KentHughenden Valley Half & 10K
High Wycombe, BuckinghamshireRun Aintree 5k, 10k & Half Marathon Presented by YouFibre
Liverpool, MerseysideBright Skies Surrey Hills
Denbies Wine Estate, Bradley Lane, Dorking. RH5 6AABattersea Park Half Marathon
LondonBelvoir Castle Run Series
Grantham, Belvoir, LeicestershireOffer
10% OFF
Richmond Park July 5k,10k and Half Marathon
London, Greater LondonThe Rubber Ducky Run
The Last Hop, Thames Edge, Clarence Street, Staines-Upon-ThamesRace The Estate
Revesby Estate (North), Revesby, Boston. PE22 7NUWye Valley Tunnel Run (Marathon, Half, 10km, Colourburst)
Sedbury, GloucestershirePHOENIX - South Wales - Flamingo Run
Treharris, Mid GlamorganGreat Barrow Challenge Day 1
Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AXThe Great Barrow Challenge Day 2
Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AXPHOENIX Fridays - Fellowship of the Run Friday
Walton-on-Thames, SurreyGreat Barrow Challenge Day 3
Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AXThe Rasselbock 505
Oxford, OxfordshireRUN DORNEY 5K, 10K & HALF MARATHON
Windsor, BerkshireGreat Barrow Challenge Day 4
Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AXRunThrough Wimbledon Common Half Marathon & 10k
London, Greater LondonThe Big Cake Run
The Last Hop, Unit 2, Thames Edge, 15-18 Clarence St, Staines TW18 4SURun Northumberland Super Fast 5k / 10k / Half
Newcastle upon Tyne, Tyne and WearGreat Barrow Challenge Day 5
Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AXGreat Barrow Challenge Day 6
Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AXHalf Marathon FAQs
How long is a half marathon?
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?
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
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?
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 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?
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.