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Marathons in South East in August 2025

Find marathons near me in South East in August 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Take on this marathon distance event as part of the day of multi-sports and take the opportunity to race around this unique and inspiring Olympic venue on flat, scenic grounds with PB potential.
  • Sat 9 Aug 2025
  • £40-£42
  • Sat 9 Aug 2025
  • £40-£42
Windsor, Buckinghamshire, UK

Dorney Triathlon | August | Marathon

Take on this marathon distance event as part of the day of multi-sports and take the opportunity to race around this unique and inspiring Olympic venue on flat, scenic grounds with PB potential.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 18 & over
  • 26.2 miles road running
A new and unique concept where you turn up ready to conquer a  Marathon but if you're feeling great tackle an Ultra, or go easy and run a cool 1-2 loops instead, depending on how you feel on the day!
  • Sat 30 Aug 2025
  • £52
  • Sat 30 Aug 2025
  • £52
Gerrards Cross, Buckinghamshire, UK

Running Tribe Races | Aug | Full Marathon

A new and unique concept where you turn up ready to conquer a Marathon but if you're feeling great tackle an Ultra, or go easy and run a cool 1-2 loops instead, depending on how you feel on the day!

  • Enter online
  • Undulating
  • Age 18 & over
  • 26.2 miles multi terrain running

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