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Half marathons in South East

Find half marathons in South East in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Select an event for photos, video, route, location, reviews, entry fees and how to enter.

Boosted
A popular, fast, scenic AIMS-certified race, with BARR Gold accreditation for outstanding race management featuring beautiful lakes, parks, and picturesque villages with the highest level of support.
  • Mon 4 May
  • £40-£50
Milton Keynes, Buckinghamshire

MK Half Marathon

A popular, fast, scenic AIMS-certified race, with BARR Gold accreditation for outstanding race management featuring beautiful lakes, parks, and picturesque villages with the highest level of support.

  • 13.1 miles road running + 518 ft ascent
  • Chip timing
  • Enter online
  • GPS tracking
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
An autumnal trail treat to delight the senses and lift your spirit as you clock the miles and enjoy the majestic beauty of Wendover Forest. See you there!
  • Sun 1 Nov
  • £33
Tring, Buckinghamshire

Wendover Woods Half Marathon

An autumnal trail treat to delight the senses and lift your spirit as you clock the miles and enjoy the majestic beauty of Wendover Forest. See you there!

  • 13.1 miles trail running + 1483 ft ascent
  • Enter online
  • Undulating
  • Age 17 & over
MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Whitstable!
  • Sat 7 Nov
  • £25-£35
Herne Bay, Kent

Whitstable & Herne Bay MoRun | Half Marathon

MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Whitstable!

  • 13.1 miles road running
  • Chip timing
  • Enter online
  • Age 17 & over
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence, a half marathon, then a Remembrance medal, goody bag and special pin.
  • Sun 8 Nov
  • £25-£37
Egham, Surrey

Remembrance Run | South | Half Marathon

Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence, a half marathon, then a Remembrance medal, goody bag and special pin.

  • 13.1 miles trail running
  • Enter online
  • Flat
  • Age 17 & over
MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Southampton!
  • Sun 15 Nov
  • £25-£35
Southampton, Hampshire

Southampton MoRun | Half Marathon

MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Southampton!

  • 13.1 miles trail running
  • Chip timing
  • Enter online
  • Undulating
  • Age 17 & over
A new and unique concept where you decide how many loops you feel capable of on the day from 7km up to an ultra marathon! Push yourself further or go easy.
  • Sat 28 Nov
  • £26-£37
Gerrards Cross, Buckinghamshire

Running Tribe Races | Nov

A new and unique concept where you decide how many loops you feel capable of on the day from 7km up to an ultra marathon! Push yourself further or go easy.

  • 1 day multi terrain running
  • Beginner-friendly
  • Dogs allowed at venue
  • Hilly
  • Traffic free
  • Event village
  • Park
  • Rural
  • Public transport links
  • Age 16 & over
Come and join in for the Snow Globe Gallop Bobble Hat Run, at this event you can earn yourself one of the incredible themed medals and, of course, a bobble hat!!
  • Sat 5 Dec
  • £23-£40
Staines, Surrey

The Snow Globe Gallop Bobble Hat Run | Half Marathon

Come and join in for the Snow Globe Gallop Bobble Hat Run, at this event you can earn yourself one of the incredible themed medals and, of course, a bobble hat!!

  • 13.1 miles trail running
  • Enter online
  • Age 17 & over
A new and unique concept where you decide how many loops you feel capable of on the day from 7km up to an ultra marathon! Push yourself further or go easy.
  • Sat 12 Dec
  • £26-£37
Gerrards Cross, Buckinghamshire

Running Tribe Races | Dec

A new and unique concept where you decide how many loops you feel capable of on the day from 7km up to an ultra marathon! Push yourself further or go easy.

  • 1 day multi terrain running
  • Beginner-friendly
  • Dogs allowed at venue
  • Enter online
  • Undulating
  • Hilly
  • Traffic free
  • Park
  • Rural
  • Public transport links
  • Age 16 & over
Come and join the day of running and aim to complete a half marathon at your own pace on a flat, out-and-back route along the River Thames then receive a bespoke medal and goody bag at the finish!
  • Sat 26 Dec
  • £33-£35
Egham, Surrey

Boxing Day Challenge | Half Marathon

Come and join the day of running and aim to complete a half marathon at your own pace on a flat, out-and-back route along the River Thames then receive a bespoke medal and goody bag at the finish!

  • 13.1 miles trail running
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
This is the original Hampton Court Half Marathon and is run over a fast, flat and interesting course that borders the river-side grounds of the magnificent palace with King Henry VIII cheering on!
  • Sun 14 Feb 2027
  • £35-£42
Thames Ditton, Surrey

Hampton Court Half Marathon

This is the original Hampton Court Half Marathon and is run over a fast, flat and interesting course that borders the river-side grounds of the magnificent palace with King Henry VIII cheering on!

  • 13.1 miles road running
  • Venue accessible
  • Beginner-friendly
  • Dogs allowed at venue
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Fancy dress
  • Event village
  • Rural
  • Free venue entry
  • Age 17 & over
Join the UK's Happiest Half - a fast, flat race with a buzzing Brighton atmosphere. An early season major half and one of the most popular races in the UK!
  • Sun 28 Feb 2027
  • From £44.50
Brighton, East Sussex

ALTRA Brighton Half Marathon

Join the UK's Happiest Half - a fast, flat race with a buzzing Brighton atmosphere. An early season major half and one of the most popular races in the UK!

  • 13.1 miles road running
  • Chip timing
  • Traffic free
  • Age 17 & over
  • Sat 11 Apr
  • £10-£49
Brighton, East Sussex

The Maverick East Sussex Trail | Half Marathon - 21K

  • 21 km trail running
  • Sun 19 Apr
  • From £40
Tunbridge Wells, East Sussex

Eridge Park - Trail Half Marathon & 10K | Half Marathon

  • 13.1 miles trail running
  • Sun 19 Apr
  • £40
Basingstoke, Hampshire

Dell 10K & Half Marathon | Half Marathon

  • 13.1 miles trail running
  • Sun 26 Apr
  • £31-£40
Farnham, Hampshire

Bolt Round the Holt | Half Marathon

  • 13.1 miles xc running + 1013 ft ascent
  • Sun 3 May
  • From £45
Southampton, Hampshire

ABP Southampton Half Marathon

  • 13.1 miles road running + 152 m ascent
  • Sun 10 May
  • £40-£42
Crawley, West Sussex

Run Gatwick | Half Marathon

  • 13.1 miles road running
  • Sun 10 May
  • £40-£42
Reading, Berkshire

Goring Gap Trails | Run - Half Marathon

  • 13.1 miles trail running + 102 m ascent
  • Sun 10 May
  • £40-£42
Polegate, East Sussex

The Rathfinny Run 10.7K and Half Marathon | Half Marathon

  • 21.4 km trail running
  • Sat 16 May
  • £119-£129.99
Henley-on-Thames, Buckinghamshire

London West Spartan Trifecta Weekend | Beast 21K

  • 21 km multi terrain running
  • Sat 23 May
  • £42-£44
Eastbourne, East Sussex

Seven Sisters Half Marathon

  • 13.1 miles trail running + 2057 ft ascent
  • Sun 31 May
  • £30-£40
Faversham, Kent

Macknade Half Marathon & 10K | Half Marathon

  • 13.1 miles multi terrain running
  • Sun 7 Jun
  • £32-£39
Lewes, East Sussex

Weald Challenge

  • 22 km trail running
  • Sun 14 Jun
  • £53-£55
Kingsclere, Hampshire

The Hampshire Hoppit | Half Marathon

  • 13.1 miles trail running + 330 m ascent
  • Sat 27 Jun
  • £35-£45
Winchester, Hampshire

Gravel Rush, Winchester | 21K Half Marathon

  • 21 km trail running
  • Sun 5 Jul
  • £30-£32
Aylesbury, Buckinghamshire

Chiltern Ridge Half Marathon

  • 21.3 km trail running + 526 m ascent

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