Summer Triathlons

Whether you're thinking of trying out a tri or a seasoned racer, we've rounded up 6 of the best triathlons to take on this year. Why not add some swim and bike to your run this summer?

London T100 Triathlon 2026

T100 Triathlon is redefining participation sports with dynamic multi-sport festivals set in iconic locations. Dive into the action with a global community of athletes, feel the electric buzz of the start line, soak up the roar of the crowd and embrace the triumph of crossing the finish. Together, we...

London

London T100 Triathlon 2026

The Cardiff Triathlon & Duathlon

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...

Cardiff

The Cardiff Triathlon & Duathlon

A group of cyclists participating in a race pass by a distinctive modern building with large, golden letters on its facade. Spectators watch from the roadside, while a medic and their motorcycle are on standby. Trees and a partly cloudy sky can be seen in the background.

The Northumbrian Half Iron-Distance Triathlon & Trails Runs

A half iron-distance triathlon AND UTMB Index Trail Runs in and around the stunning and challenging Kielder Water and Forest. The ultimate endurance test will be open to a limited number of individuals and teams to conquer the beautiful waters, forests and terrain that give Northumberland and Kielde...

Hexham

The Northumbrian Half Iron-Distance Triathlon & Trails Runs

5.0

from £43.00

A triathlon starts with participants running into the water under a starting arch that emits orange smoke. A crowd watches by the side, and trees form the backdrop. The sky is overcast, and the scene is filled with anticipation and energy.

Votwo Dorney Lake Triathlon

The Olympic venue, Eton Dorney, offers pan flat, traffic-free roads, and a beautiful clear lake. The venue is private and specifically hired for the purpose of a traffic-free triathlon event. Sunday 20th September 2026 Flat and very, very fast! Dorney Lake is renowned for its traffic-free, smooth ta...

Windsor

Votwo Dorney Lake Triathlon

4.5

A large group of swimmers wearing black wetsuits and orange swim caps start a race in open water. The foreground shows churning water, and the background features lush green trees under a partly cloudy sky. A "Start" banner is visible on the right side.

Darwen Triathlon, Aquathlon & Runs

Join us for the Darwen Sprint and Standard Distance Triathlons, Aquathlons and 5k & 10k Trail races on Sunday 22nd June. Take on a Sprint or Standard Distance Triathlon or Aquathlon around Bold Venture Park and surrounding scenic moorland, including a trail run up to the iconic Jubilee Tower! This T...

Darwen

Darwen Triathlon, Aquathlon & Runs

4.0

Two men are running in a race, smiling and appearing energized. The man in front wears a black and pink athletic suit with sunglasses and a cap, while the man behind follows with a blue outfit. The background shows green trees and banners, with one reading "BROOKS.

Lough Cutra Castle Triathlon and Multisport

Whether you’re 9 or 90 years old, a first-timer or seasoned athlete, choose from a plethora of distances in Triathlon, Duathlon, Aquabike, Aquathlon, Run and Swim races. Sign up as an individual or with a team of friends in one of our relays! Arguably the most fun event in the series, Lough Cutra pr...

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