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Half marathons in South East in September 2026

Find half marathons in South East 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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Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course at the same venue was previously rated one of the top UK marathons.
  • Sat 12 Sep
  • £43-£45
Wadhurst, East Sussex, UK

Bewl Water Autumn | Half Marathon

Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course at the same venue was previously rated one of the top UK marathons.

  • 13.1 miles trail running + 710 ft ascent
  • Chip timing
  • Enter online
  • Undulating
  • Age 17-80
An inspiring half marathon in Windsor Great Park, starting and finishing on the Long Walk with Windsor Castle as the backdrop - probably the most iconic of all road race finishes in the UK!
  • Sun 27 Sep
  • £31.50-£48
Windsor, Berkshire, UK

Windsor Half Marathon

An inspiring half marathon in Windsor Great Park, starting and finishing on the Long Walk with Windsor Castle as the backdrop - probably the most iconic of all road race finishes in the UK!

  • 13.1 miles road running + 167 m ascent
  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Age 17 & over
This ever popular race promises amazing coastal views and a relatively flat coastal promenade run with real PB potential.
  • Sun 27 Sep
  • From £25
Folkestone, Kent, UK

Folkestone Rotary Half Marathon

This ever popular race promises amazing coastal views and a relatively flat coastal promenade run with real PB potential.

  • 13.1 miles road running + 469 ft ascent
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 17 & over
  • Sun 13 Sep
Dorking, Surrey, UK

Bacchus Wine Half Marathon

  • 13.1 miles trail running + 1427 ft ascent
  • Sun 13 Sep
Brockenhurst, Hampshire, UK

The Garmin New Forest Marathon | Half Marathon

  • 13.1 miles multi terrain running + 150 ft ascent
  • Sun 27 Sep
Horsham, West Sussex, UK

Run Barns Green

  • Fun run
  • 5K run
  • 10K run
  • Half marathon

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