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Road Half marathons in Hertfordshire in Spring

Find road half marathons in Hertfordshire in Spring - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Smash your personal best on a traffic-free, flat and fast course from the White Water Centre and into surrounding beautiful regional parkland with a custom-designed medal for finishers.
  • Sun 22 Mar 2026
  • £32-£34
Waltham Cross, Hertfordshire, UK

ATW Run Fest at Lee Valley | Half Marathon

Smash your personal best on a traffic-free, flat and fast course from the White Water Centre and into surrounding beautiful regional parkland with a custom-designed medal for finishers.

  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 79 ft ascent
From the fantastic Ridlins Stadium athletics track, wind your way around superb traffic-free tarmac routes and enjoy the beautiful Fairlands Valley Park the return to a vibrant event village!
  • Mon 6 Apr 2026
  • £30-£32
Stevenage, Hertfordshire, UK

ATW Stevenage Spring Half Marathon

From the fantastic Ridlins Stadium athletics track, wind your way around superb traffic-free tarmac routes and enjoy the beautiful Fairlands Valley Park the return to a vibrant event village!

  • Enter online
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 285 ft ascent

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