Trail runs in Hertfordshire
Find trail 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.
Filter by date
Filter by place
MapEvent 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 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
- 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
- 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 28 Mar 2026
Run the Wild Half Marathon - Spring Edition
- 21.1 km trail running + 300 m ascent