Runs in Hertfordshire
Find runs in Hertfordshire 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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Event listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 26 Oct
- £55
Stort30
A stunningly pretty 30-mile out-and-back ultra on the border of Hertfordshire and Essex along the River Stort and Lee navigation. A great first foray into ultra running or a fast competitive race.
- Newcomers
- Chip timing
- Enter online
- Flat
- Event village
- Rural
- Age 18 & over
- 30 miles trail running + 188 ft ascent
- Sat 1 Nov
- £23-£37.50
Catherine Wheel Canter
Welcome to the Fireworks Festival of Running! Come and tackle the track to see how far you can go in 6 hours, whether you reach 5K or an ultra, over the 400m circuit.
- Newcomers
- Music
- Event village
- Park
- Age 16 & over
- 5K run
- 10K run
- Half marathon
- Marathon
- 50K ultra run
- + 1 more race
- Sat 1 Nov
- £23-£37.50
Guy Fawkes Gallop
Welcome to the Fireworks Festival of Running! Come and tackle the track to see how far you can go in 6 hours, whether you reach 5K or an ultra, over the 400m circuit.
- Newcomers
- Music
- Event village
- Park
- Age 16 & over
- 5K run
- 10K run
- Half marathon
- Marathon
- 50K ultra run
- + 1 more race
- Sat 1 Nov
- £55.50-£57.50
Rocket Around the Running Track
Welcome to the Fireworks Festival of Running! Come and tackle the 400 metre athletics track for 12 hours and see how far you can go!
- Newcomers
- Music
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Event village
- Park
- Age 21 & over
- 12 hrs track and field
- Sat 1 Nov
- £55.50-£57.50
Fireworks 50
Welcome to the Fireworks Festival of Running! Come and tackle the 400 metre athletics track for the festival's ultimate goal of 50 miles in 12 hours! Have you got what it takes?
- Newcomers
- Music
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Event village
- Park
- Age 21 & over
- 50 miles track and field
- Sun 30 Nov
- £22-£24
ATW Hatfield 5
Join ATW Events for the 11th Year of the Hatfield 5, now featuring the Herts County Championships, this is the region's fastest 5 miler (3rd fastest time in the UK 2022).
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Age 15 & over
- Road run
- Sun 14 Dec
- FREE-£31
ATW Stevenage Winter Half Marathon & 10K
Starting and finishing on the fantastic Ridlins Stadium athletics track, the half marathon winds its way around the superb traffic-free tarmac routes that cover the town of Stevenage.
- Families
- Recycling
- Newcomers
- Music
- Event village
- Sustainability policy
- All ages
- Fun run
- 10K run
- Half marathon
- Wed 31 Dec
- £27-£29
ATW St Albans New Years Eve 10K
Finish the year with a brand new PB and celebrate the arrival of a brand new year with a glass of fizz and a healthy twist at this New Year's Eve running extravaganza.
- Families
- Recycling
- Newcomers
- Enter online
- Flat
- PB
- Traffic free
- Event village
- Park
- Sustainability policy
- Age 15 & over
- 10 km road running + 108 ft ascent
- Sun 1 Feb 2026
- £12-£33
ATW Watford Half Marathon, 10K & Fun Run
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.
- Families
- Recycling
- Newcomers
- Entertainment
- Music
- Event village
- Park
- Sustainability policy
- Public transport links
- All ages
- Fun run
- Half marathon
- 10K run
- Sun 15 Feb 2026
- £28-£30
ATW Love Welwyn Garden City 10K
11th anniversary! Welcome to the Love Welwyn Garden City 10K — historically held around Valentine's Day this is the event that encourages you to fall in love with running.
- Recycling
- Newcomers
- Music
- Enter online
- Event village
- Sustainability policy
- Age 15 & over
- 10 km road running + 246 ft ascent
- Sat 21 Mar 2026
- £27-£38
Moo-rathon, Calf and Hen K
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.
- Newcomers
- Dogs allowed at venue
- Event village
- Age 18 & over
- Multi-terrain run 2
- Sun 22 Mar 2026
- £24-£34
ATW Run Fest at Lee Valley
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.
- Recycling
- Newcomers
- Event village
- Park
- Free venue entry
- Sustainability policy
- Public transport links
- Age 15 & over
- 10K run
- Half marathon
- Fri 3 Apr 2026
- £26-£28
ATW St Albans Easter 10K
A flat, fast and chip timed event - it's a sure-fire guarantee to give you the best chance of a PB in the 10K.
- Families
- Recycling
- Newcomers
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Event village
- Park
- Sustainability policy
- Age 15 & over
- 10 km road running + 108 ft ascent
- Mon 6 Apr 2026
- FREE-£32
ATW Stevenage Spring Half Marathon & 10K
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!
- Families
- Newcomers
- Music
- Event village
- Urban
- Park
- All ages
- Fun run
- 10K run
- Half marathon
- Sat 23 - Sun 24 May 2026
- £33-£165
Farmmageddon
Can you survive Farmmageddon? You have 32 hours to complete 100 miles over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm. 24-hour or shorter distance options too.
- Newcomers
- Event village
- Rural
- Age 18 & over
- 5K run
- 10K run
- Half marathon
- Marathon
- Ultra run 2
- + 2 more races
- Sun 14 Jun 2026
- £11-£36
ATW St Albans Half Marathon, 10K, 5K & Fun Run
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.
- Families
- Venue accessible
- Recycling
- Newcomers
- Fancy dress
- Event village
- Park
- Sustainability policy
- All ages
- Fun run
- 5K run
- Half marathon
- Challenge walk
- 10K run
- Sat 27 Jun 2026
- £27-£38
Cock-a-doodle Dawdle
Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.
- Newcomers
- Dogs allowed at venue
- Event village
- Rural
- Age 14 & over
- 5K run
- 10K run
- Trail run
- Half marathon 2
- Marathon
- + 1 more race
- Sat 1 Nov
Chiltern Ridge Winter 50K
- 50 km trail running + 800 m ascent
- Sat 1 Nov
First Saturday of the Month 5K
- 5 km road running