Triathlon and duathlon events
Find triathlons and duathlons by date and location. Compare upcoming swim-bike-run and run-bike-run events and read their entry details.
30 upcoming listings · Showing 25–30
Mumbles Triathlon 2027
Mumbles, Wales
Triathlon
Challenge Almere-Amsterdam Triathlon 2027
Almere, Flevoland, Netherlands
Triathlon
Brutal Extreme Triathlons 2027
Llanberis, Gwynedd, Wales
Triathlon
Seriously Brutal Duathlons 2027
Llanberis, Gwynedd, Wales
Duathlon
North West Triathlon 2027
Barony Park and Nantwich Leisure Centre, Nantwich, Cheshire, England
Triathlon
Superfeet Sandman Triathlon & Duathlon 2027
Newborough Forest, Anglesey, Wales
Triathlon
Choosing your event
Check the distance of each discipline, transition rules, equipment requirements and any licence or day-membership requirements. Confirm whether the swim is in a pool or open water.
Dates and availability may change. Confirm the latest details on the event page and the organiser’s website before making plans.
Find your next event by sport
Explore running races, cycling events, swims and multisport challenges. Browse the calendars below, or explore the map to narrow your search by date, distance and location.
How do I find events near me?
Open Advanced filters and enter your postcode and search radius, or move the map to your area. Choose a sport and date range to refine your results.
Can I enter every event through Aventa?
Some organisers manage entries on Aventa; other listings link to the organiser’s entry website. Check the event page for availability, opening dates, prices and the correct entry link.
What should I check before entering?
Review the route, distance, elevation and experience requirements. Check the organiser’s current details, required equipment and entry terms before booking.
