14

Half marathons in Hertfordshire

Find half marathons near me in Hertfordshire for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.

Search by month

Search by place

Map

Events near me

Click an event for full event details, location, route, sustainability, what's included and how to enter.

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
  • £35-£37
  • Sun 28 Sep
  • £35-£37
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 + 400 ft ascent
Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete a half marathon over multiple laps of the 400m circuit - and how fast you can do it.
  • Sat 1 Nov
  • £33-£35
  • Sat 1 Nov
  • £33-£35
Ware, Hertfordshire, UK

Catherine Wheel Canter | Half Marathon

Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete a half marathon over multiple laps of the 400m circuit - and how fast you can do it.

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 18 & over
  • 13.1 miles track and field
Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete a half marathon over multiple laps of the 400m circuit - and how fast you can do it.
  • Sat 1 Nov
  • £33-£35
  • Sat 1 Nov
  • £33-£35
Ware, Hertfordshire, UK

Guy Fawkes Gallop | Half Marathon

Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete a half marathon over multiple laps of the 400m circuit - and how fast you can do it.

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 18 & over
  • 13.1 miles track and field
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 14 Dec
  • £29-£31
  • Sun 14 Dec
  • £29-£31
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 + 285 ft ascent
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 1 Feb 2026
  • £31-£33
  • Sun 1 Feb 2026
  • £31-£33
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 21 Mar 2026
  • £27-£38
  • Sat 21 Mar 2026
  • £27-£38
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 + 164 ft ascent
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 21 Mar 2026
  • £27-£38
  • Sat 21 Mar 2026
  • £27-£38
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 + 164 ft ascent
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
  • 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
  • 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
Can you survive Farmmageddon? A fantastic half marathon through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
  • Sat 23 May 2026
  • £33-£38
  • Sat 23 May 2026
  • £33-£38
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 + 164 ft ascent
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 14 Jun 2026
  • £34-£36
  • Sun 14 Jun 2026
  • £34-£36
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 + 699 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 over a lovely half marathon looped trail route.
  • Sat 27 Jun 2026
  • £34-£36
  • Sat 27 Jun 2026
  • £34-£36
Buntingford, Hertfordshire, UK

Cock-a-doodle Dawdle | Half Marathon

Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it over a lovely half marathon looped trail route.

  • Enter online
  • Age 18 & over
  • 13.1 miles trail running + 164 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 over a lovely half marathon-plus looped trail route.
  • Sat 27 Jun 2026
  • £36-£38
  • Sat 27 Jun 2026
  • £36-£38
Buntingford, Hertfordshire, UK

Cock-a-doodle Dawdle | Heavy Half Marathon

Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it over a lovely half marathon-plus looped trail route.

  • Enter online
  • Undulating
  • Age 18 & over
  • 13.1 miles trail running + 164 ft ascent
  • Sat 11 Oct
Tring, Hertfordshire, UK

Run the Wild Half Marathon - Autumn Edition

  • 21.1 km trail running + 300 m ascent

Search options

Back to search options