The Finest Closed Roads Capital City Triathlon
Events / Triathlon / Duathlon
Cardiff Triathlon & Duathlon 2025
Situated in the renowned Cardiff Bay, this triathlon & duathlon stands out as a truly memorable city race on the calendar. The event village and transition area are located on Roald Dahl Plass, right in front of the Wales Millennium Centre.
Securing your spot in the Cardiff Triathlon & Duathlon not only grants you access to one of the UK's finest city triathlons but ensures an experience beyond compare. Anticipate a meticulously planned route with closed roads, captivating global broadcast coverage, and vibrant racing atmosphere. Whether you're tackling the Super-Sprint, Sprint, Standard, 70.3 triathlon, or Sprint Duathlon, the Cardiff Triathlon & Duathlon caters to all skill levels. Don't miss out on this extraordinary event!
Choose your distance
Cardiff 2025
Super-Sprint
22 Jun 2025
Swim: 400m
Bike: 9.3km
Run: 2.5km
Cardiff 2025
Sprint
22 Jun 2025
Swim: 750m
Bike: 18.5km
Run: 4.7km
Cardiff 2025
Standard
22 Jun 2025
Swim: 1500m
Bike: 37km
Run: 9km
Cardiff 2025
Legend (70.3)
22 Jun 2025
Swim: 1900m
Bike: 88km
Run: 21.8km
Cardiff 2025
Sprint Duathlon 2025
22 Jun 2025
Run 1: 2.5km
Bike: 18.5km
Run 2: 4.7km
What's Included
Lively Event Village
Music, commentary, shopping, food and chill out zones.
Family Friendly Vibes
Family finishes and plenty to see and do.
On Course Support
Brilliant marshals, signage and pick up vehicles
Welsh Slate Finisher Mementos
Locally made to mark your achievement and provide a lasting, unique and usable memento
Spectacular Location
Cardiff's unique city architecture offers a great backdrop to your race
Professional Timing
Chip timing & live online results
“Thank you all so much! An incredible event - absolutely loved the draft legal aspect! The course was also spot on. There needs to be more like this in the UK!”
2023 Participant
Event Information
Cardiff Triathlon & Duathlon 2025
FAQs
Cardiff Triathlon & Duathlon 2025
Travel & Accommodation
Cardiff Triathlon & Duathlon 2025
Info for locals
Cardiff Triathlon & Duathlon 2025
Volunteer
Cardiff Triathlon & Duathlon 2025
Gallery
Cardiff Triathlon & Duathlon 2025
Race Reports
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We are proud that all our events are bilingual. Signs, registration and commentary are available in English and Welsh.
Event Partners
Working with local communities
Looking after our environment
Find out more about Looking after our environment
Tees for Trees
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