Hosted in the picturesque seaside town of Tenby, IRONMAN Wales offers athletes a unique and rigorous triathlon experience. The race commences with a two-loop ocean swim at Tenby’s North Beach, followed by a hilly two-loop bike course through the scenic countryside of Pembrokeshire Coast National Park. The marathon run consists of four loops through Tenby’s medieval town center, lined with enthusiastic spectators, creating an electrifying atmosphere. Known for its challenging terrain and passionate local support, IRONMAN Wales has earned accolades, including being voted the #2 Most Recommended Race and #2 Best Bike Course globally in the IRONMAN Athletes’ Choice Awards.
Race Date:
21 September, 2025
The marathon run includes four loops through the medieval town of Tenby, with an elevation gain of about 531 meters. Spectators line the streets, offering enthusiastic support as athletes navigate the historic town center and beachfront.
Weather based on historical averages.
The marathon run includes four loops through the medieval town of Tenby, with an elevation gain of about 531 meters. Spectators line the streets, offering enthusiastic support as athletes navigate the historic town center and beachfront.
The IRONMAN Wales is 42km long.
The IRONMAN Wales takes place in Tenby, UK.
The IRONMAN Wales elevation gain is 503 metres, which Runna classifies as a Moderate race.
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!
The marathon run includes four loops through the medieval town of Tenby, with an elevation gain of about 531 meters. Spectators line the streets, offering enthusiastic support as athletes navigate the historic town center and beachfront.
The IRONMAN Wales is 42km long.
The IRONMAN Wales takes place in Tenby, UK.
The IRONMAN Wales elevation gain is 503 metres, which Runna classifies as a Moderate race.
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
Ironman
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by IRONMAN Wales 2025 or IRONMAN Group. 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 IRONMAN Wales 2025 website.