#RedefiningTriathlon

LONDON T100 TRIATHLON
9-10 August 2025
Olympic Triathlon SOLD OUT! Final entries remaining across our other distances, join thousand of athletes for an epic multi-sport weekend in the Heart of London! Olympic Triathlon SOLD OUT! Final entries remaining across our other distances, join thousand of athletes for an epic multi-sport weekend in the Heart of London!
Participate

Find your race

T100 is a new series of global triathlon and multi-sport events, offering you a world-class experience whether you’re totally new to swimming, cycling and running or want to push the boundaries of your performance. With a selection of event types and distances, a sustainable swag bag of goodies, iconic courses and the chance to watch the world’s best professional triathletes race, it’ll be a high-energy weekend you’ll never forget.

Multi-Sport Festivals
100km

Triathlon
Distance

Multiple

Races &
events

Races

Headlined by our unique 100km triathlon distance, each event will also feature a selection of other multi-sport races as well as single-discipline competitions, which will be announced soon. Find your fitness challenge for 2025!

2025 Races

9-10 AUgust 2025
30-31 August 2025
13-16 November 2025
12-13 December 2025

2026 Races

21-22 March 2026
2026 TBC
2026 TBC
2026 TBC

GET INSPIRED

Follow the pros

Fuel your training inspiration by following 40 of the world’s top female and male pros as they push their limits in a series of epic races, all leading to the T100 Triathlon World Championship Final with a share of over $8 million on the line. Watch their grit, feel their passion, and let their journey drive yours.