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Half marathons in Hertfordshire

Find half marathons near me in Hertfordshire for 2024/2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Starting and finishing on the fantastic Ridlins Stadium athletics track, the route winds its way around the superb traffic-free tarmac routes that cover the town of Stevenage.
  • Sun 8 Dec
  • £27-£34
  • Entries close soon
  • Sun 8 Dec
  • £27-£34
  • Entries close soon
Stevenage, Hertfordshire, UK

ATW Stevenage Winter Half Marathon

Starting and finishing on the fantastic Ridlins Stadium athletics track, the route winds its way around the superb traffic-free tarmac routes that cover the town of Stevenage.

  • Enter online
  • Age 17 & over
  • 13.1 miles road running
This popular event has a strong history within the running community and has been taking place for over 40 years. Join a day of running, community spirit and exciting experiences!
  • Sun 2 Feb 2025
  • £34-£36
  • Sun 2 Feb 2025
  • £34-£36
Watford, Hertfordshire, UK

ATW Watford Half Marathon

This popular event has a strong history within the running community and has been taking place for over 40 years. Join a day of running, community spirit and exciting experiences!

  • Chip timing
  • Enter online
  • Undulating
  • Age 17 & over
  • 13.1 miles road running + 751 ft ascent
Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.
  • Sat 22 Mar 2025
  • £25-£37.50
  • Sat 22 Mar 2025
  • £25-£37.50
Buntingford, Hertfordshire, UK

Moo-rathon, Calf and Hen K | 6 Hour

Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.

  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Age 18 & over
  • 6 hrs trail running
Marathon, Half and 10K! Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.
  • Sat 22 Mar 2025
  • £25-£37.50
  • Sat 22 Mar 2025
  • £25-£37.50
Buntingford, Hertfordshire, UK

Moo-rathon, Calf and Hen K | 4 Hour

Marathon, Half and 10K! Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.

  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Age 18 & over
  • 4 hrs trail running
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 23 Mar 2025
  • £35-£37
  • Sun 23 Mar 2025
  • £35-£37
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
Can you survive Farmmageddon? A fantastic half marathon through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
  • Sat 24 May 2025
  • £34-£36
  • Sat 24 May 2025
  • £34-£36
Buntingford, Hertfordshire, UK

Farmmageddon | Half Marathon

Can you survive Farmmageddon? A fantastic half marathon through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.

  • Chip timing
  • Enter online
  • Traffic free
  • Age 18 & over
  • 13.1 miles trail running
A community focused event, ATW St Albans Half Marathon aims to raise money for local charities and organisations as well as put on a great day out for all the family, delivered by runners for runners.
  • Sun 8 Jun 2025
  • £37-£39
  • Sun 8 Jun 2025
  • £37-£39
St Albans, Hertfordshire, UK

ATW St Albans Half Marathon

A community focused event, ATW St Albans Half Marathon aims to raise money for local charities and organisations as well as put on a great day out for all the family, delivered by runners for runners.

  • Chip timing
  • Enter online
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running
Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.
  • Sat 28 Jun 2025
  • £23-£37.50
  • Sat 28 Jun 2025
  • £23-£37.50
Buntingford, Hertfordshire, UK

Cock-a-doodle Dawdle | 4 hour

Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.

  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Age 18 & over
  • 4 hrs trail running
The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park with an ideal, traffic-free, disused railway line in between.
  • Sun 28 Sep 2025
  • £30-£36
  • Sun 28 Sep 2025
  • £30-£36
Welwyn Garden City, Hertfordshire, UK

ATW Welwyn Half Marathon

The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park with an ideal, traffic-free, disused railway line in between.

  • Chip timing
  • Enter online
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running
  • Sun 2 Mar 2025
Berkhamsted, Hertfordshire, UK

Berkhamsted Half Marathon and Five Mile Run | Half Marathon

  • 13.1 miles road running
  • Sat 29 Mar 2025
Tring, Hertfordshire, UK

Run the Wild Half Marathon - Spring Edition

  • 21.1 km trail running
  • Sat 29 Mar 2025
Broxbourne, Hertfordshire, UK

Gratitude 25K

  • 25 km road running
  • Sun 1 Jun 2025
Ware, Hertfordshire, UK

Circuit Du Sore Legs - Part Cinq | Half Marathon

  • 13.1 miles track and field

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