On October 25, 2025, the Giddy Horse Races weekend returns to the historic Chepstow Racecourse for a celebration of trail running and endurance challenges. Participants can choose from standard trail distances like 4-mile, 8-mile, and half marathon, as well as night runs, canicross events, and obstacle course races for added adventure. Ultra runners can take on solo or team backyard-style challenges, with options including an 8-hour (33 miles), 12-hour (50 miles), and 24-hour (approx. 104 miles) ultra race. The looped course blends woodland, parkland, and tarmac with gentle elevation and panoramic views of the Severn Bridge and Wye Valley cliffs. With its festival atmosphere, variety of race formats, and inclusive approach, it’s a standout event on the UK trail running calendar.
Race Date:
25 October, 2025
Scheduled for Sunday, 25 October 2025 at Piercefield Park, Chepstow Racecourse, the Half Marathon Trail consists of three slightly extended laps with views of the Severn Bridge and surrounding countryside. Organised by Relish Running, it’s a rewarding off-road half marathon experience.
Weather based on historical averages.
Scheduled for Sunday, 25 October 2025 at Piercefield Park, Chepstow Racecourse, the Half Marathon Trail consists of three slightly extended laps with views of the Severn Bridge and surrounding countryside. Organised by Relish Running, it’s a rewarding off-road half marathon experience.
The Giddy Horse Trail Half Marathon is 21km long.
The Giddy Horse Trail Half Marathon takes place in Chepstow, Monmouthshire, UK.
Runna classifies the Giddy Horse Trail Half Marathon elevation profile as Flat.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
Scheduled for Sunday, 25 October 2025 at Piercefield Park, Chepstow Racecourse, the Half Marathon Trail consists of three slightly extended laps with views of the Severn Bridge and surrounding countryside. Organised by Relish Running, it’s a rewarding off-road half marathon experience.
The Giddy Horse Trail Half Marathon is 21km long.
The Giddy Horse Trail Half Marathon takes place in Chepstow, Monmouthshire, UK.
Runna classifies the Giddy Horse Trail Half Marathon elevation profile as Flat.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
Running
Team
Night Run
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Giddy Horse Races 2025 or Relish Running. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Giddy Horse Races 2025 website.