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Marathons in Windsor in August 2025

Find marathons near me in Windsor 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

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