Runs in Hertfordshire
Find runs 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.
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Click an event for full event details, location, route, sustainability, what's included and how to enter.
- Sun 1 Feb 2026
- £12
- Sun 1 Feb 2026
- £12
ATW Watford Family 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!
- Enter online
- Undulating
- All ages
- 1.8 km road running
- Sun 1 Feb 2026
- £31-£33
- Sun 1 Feb 2026
- £31-£33
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
- Sun 1 Feb 2026
- £24-£26
- Sun 1 Feb 2026
- £24-£26
ATW Watford Half Marathon, 10K & Fun Run | 10K
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
- Traffic free
- Age 15 & over
- 10 km road running + 180 ft ascent
- Sun 15 Feb 2026
- £28-£30
- 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
- Sat 21 Mar 2026
- £27-£38
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
- Sat 21 Mar 2026
- £27-£38
- Sat 21 Mar 2026
- £27-£38
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
- Sun 22 Mar 2026
- £24-£26
- Sun 22 Mar 2026
- £24-£26
ATW Run Fest at Lee Valley | 10K
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 15 & over
- 10 km road running + 39 ft ascent
- Sun 22 Mar 2026
- £32-£34
- Sun 22 Mar 2026
- £32-£34
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
- Fri 3 Apr 2026
- £26-£28
- 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
- Mon 6 Apr 2026
- FREE
ATW Stevenage Spring 400M Childrens Fun Run
A free 400m Children’s Fun Run will take place on the running track 30 mins before the half-marathon start - no need to book, just turn up. Parents are welcome to run with their kids and warm up!
- Flat
- Traffic free
- All ages
- 400 m track and field
- Mon 6 Apr 2026
- £22-£24
- Mon 6 Apr 2026
- £22-£24
ATW Stevenage Spring 10K
From the fantastic Ridlins Stadium athletics track, enjoy the beautiful Fairlands Valley Park then return to a vibrant event village to live music, custom-designed medal, massage, food and drink.
- Enter online
- Traffic free
- Age 15 & over
- 10 km road running + 253 ft ascent
- Mon 6 Apr 2026
- £30-£32
- Mon 6 Apr 2026
- £30-£32
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
- Sat 23 May 2026
- £63-£65
- Sat 23 May 2026
- £63-£65
Farmmageddon | 12 Hour Challenge
Can you survive Farmmageddon? You have 12 hours to complete a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm for as far as you can. 24-hour or shorter distance options available too.
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 21 & over
- 12 hrs trail running + 164 ft ascent
- Sat 23 May 2026
- £123-£125
- Sat 23 May 2026
- £123-£125
Farmmageddon | 24 Hour Challenge
Can you survive Farmmageddon? Run, jog or walk a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend for 24 hours and see how far you can go.
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 21 & over
- 24 hrs trail running + 164 ft ascent
- Sat 23 May 2026
- £163-£165
- Sat 23 May 2026
- £163-£165
Farmmageddon | 100 Miles
Can you survive Farmmageddon? Held over 32-hours, runners will cover the fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm and receive a t-shirt, buckle and medal to prove it!
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 21 & over
- 100 miles trail running + 164 ft ascent
- Sat 23 May 2026
- £33-£38
- Sat 23 May 2026
- £33-£38
Farmmageddon | 5K
Can you survive Farmmageddon? A fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 18 & over
- 5 km trail running + 164 ft ascent
- Sat 23 May 2026
- £33-£38
- Sat 23 May 2026
- £33-£38
Farmmageddon | 10K
Can you survive Farmmageddon? A fantastic 10K through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 18 & over
- 10 km trail running + 164 ft ascent
- Sat 23 May 2026
- £33-£38
- Sat 23 May 2026
- £33-£38
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
- Sat 23 May 2026
- £33-£38
- Sat 23 May 2026
- £33-£38
Farmmageddon | Full Marathon
Can you survive Farmmageddon? A fantastic 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
- 26.2 miles trail running + 164 ft ascent
- Sat 23 May 2026
- £33-£38
- Sat 23 May 2026
- £33-£38
Farmmageddon | Ultra Marathon
Can you survive Farmmageddon? Run an ultra over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
- Enter online
- Undulating
- Traffic free
- Age 18 & over
- 32 miles trail running + 164 ft ascent
- Sat 5 Jul
First Saturday of the Month 5K
- 5 km road running