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Flat Half marathons in Northamptonshire

Find flat half marathons in Northamptonshire 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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Welcome to a 6-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a Guy Fawkes medal and goody bag at the finish.
  • Sat 1 Nov
  • £22-£34
Northampton, Northamptonshire, UK

Reason To Treason Run-Powder Plot | Half Marathon

Welcome to a 6-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a Guy Fawkes medal and goody bag at the finish.

  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
  • 13.1 miles trail running + 82.5 ft ascent

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