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Flat Half marathons in South East

Find flat 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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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
  • Sat 23 May
  • £42-£44
Eastbourne, East Sussex

Seven Sisters Half Marathon

  • 13.1 miles trail running + 2057 ft ascent
  • Sun 13 Sep
  • £51-£53
Brockenhurst, Hampshire

New Forest Marathon | Half Marathon

  • 13.1 miles multi terrain running + 150 ft ascent
  • Sun 25 Oct
  • £35-£37
Walton-on-Thames, Surrey

River Thames Half Marathon

  • 13.1 miles road running
  • Sun 6 Dec
  • £29-£35
Milton Keynes, Buckinghamshire

Milton Keynes Winter Half Marathon

  • 13.1 miles road running
  • Sun 7 Mar 2027
  • From £32.40
Eastbourne, East Sussex

Eastbourne Half Marathon

  • 13.1 miles road running

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