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Flat Half marathons in West Sussex

Find flat half marathons in West Sussex in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Enjoy a fully closed road race, on flat coastal roads with a spectacular seafront finish. Chance to take home a PB along with the finishers' t-shirt and medal.
  • Sun 3 May 2026
  • £36-£38
Worthing, West Sussex, UK

Worthing RUNFEST Half Marathon

Enjoy a fully closed road race, on flat coastal roads with a spectacular seafront finish. Chance to take home a PB along with the finishers' t-shirt and medal.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 37 m ascent
  • Sun 7 Dec
Chichester, West Sussex, UK

Running GP at Goodwood Motor Circuit

  • 5K run
  • 10K run
  • Half marathon 2
  • Marathon
  • 50K ultra run

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