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Flat Half marathons in South West in September 2026

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

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Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.
  • Sun 27 Sep
  • £37.50-£39.50
Bournemouth, Dorset

SoBo Series | Volume 4 | Stop me (if you think you've heard this one before)

Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.

  • 7 hrs road running
  • Beginner-friendly
  • Enter online
  • Flat
  • Traffic free
  • Event village
  • Coast
  • Public transport links
  • Age 18 & over
Looking for a PB? This is your course. Pancake-flat and mostly traffic-free, come to explore the Tarka Trail then receive a fabulous medal.
  • Sun 27 Sep
  • £30-£32
Barnstaple, Devon

RUN Barnstaple | Half Marathon

Looking for a PB? This is your course. Pancake-flat and mostly traffic-free, come to explore the Tarka Trail then receive a fabulous medal.

  • 13.1 miles road running
  • Enter online
  • Flat
  • PB
  • Fundraising optional
  • Age 17 & over
  • Sun 6 Sep
  • £35-£37
Dawlish, Devon

City to Sea | Half Marathon

  • 13.1 miles trail running + 2100 ft ascent
  • Sun 13 Sep
  • £23-£36
Chippenham, Wiltshire

Chippenham Half Marathon

  • 13.1 miles road running

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