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Runs in South East in September 2026

Find runs 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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Previously rated one of the top 10 UK marathons! Scenic mixed-terrain routes following Bewl Water around the reservoir route on undulating rural wooded trails and quiet country lanes.
  • Sat 12 Sep
  • £33-£62
Wadhurst, East Sussex, UK

Bewl Water Autumn

Previously rated one of the top 10 UK marathons! Scenic mixed-terrain routes following Bewl Water around the reservoir route on undulating rural wooded trails and quiet country lanes.

  • 10K run
  • Half marathon
  • Marathon
  • 50K ultra run
  • Beginner-friendly
  • Event village
  • Rural
  • Age 15-80
A true steeplechase race across the breathtaking scenery of the ancient trails surrounding the medieval town of Rye in East Sussex, linking Norman churches as you go.
  • Sun 13 Sep
  • £29-£33
Rye, East Sussex, UK

Rye Ancient Trails 30K & 15K

A true steeplechase race across the breathtaking scenery of the ancient trails surrounding the medieval town of Rye in East Sussex, linking Norman churches as you go.

  • Multi-terrain run 2
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Event village
  • Rural
  • Sustainability policy
  • Age 16 & over
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
  • £0.50-£48
Windsor, Berkshire, UK

Windsor Half Marathon & Sprite Sprint

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!

  • Half marathon
  • Fun run
  • Families
  • Recycling
  • Beginner-friendly
  • Dogs allowed at venue
  • Entertainment
  • Event village
  • Park
  • Public transport links
  • Age 5 & over
This ever popular race promises amazing coastal views and a relatively flat coastal promenade run with real PB potential.
  • Sun 27 Sep
  • £5-£27
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.

  • Fun run
  • Half marathon
  • Families
  • Beginner-friendly
  • Event village
  • Coast
  • All ages
  • Tue 8 Sep
Guildford, Surrey, UK

Silent Pool 10K

  • 10 km trail running
  • Fri 11 - Sun 13 Sep
London, UK

Thames Path Ultra Challenge

  • 100K ultra run 2
  • 50K ultra run 2
  • Trail run 4
  • Ultra run
  • 10K run
  • + 4 more races
  • Sun 13 Sep
Brockenhurst, Hampshire, UK

The Garmin New Forest Marathon

  • Fun run 2
  • Short walk
  • 5K run
  • 10K run
  • Half marathon
  • + 1 more race
  • Sun 13 Sep
Dorking, Surrey, UK

Bacchus Wine Half Marathon & 10K

  • 10K run
  • Half marathon
  • Fun run
  • Sat 19 - Sun 20 Sep
Horsham, West Sussex, UK

Tough Mudder London South

  • Obstacle race 4
  • Sat 26 Sep
Windsor, Berkshire, UK

Windsor Womens 10K

  • 10 km road running
  • Sun 27 Sep
Horsham, West Sussex, UK

Run Barns Green

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

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