London T100 Triathlon

About the Event

Race through the heart of a world capital on an iconic, traffic-free stage. The London T100 Triathlon returns on 25-26 July 2026, offering an unparalleled multisport festival at the ExCel London with distances from Super-Sprint to the epic 100km (2km/80km/18km). This premier event transforms the city's Docklands into a vibrant race course, featuring a unique dock swim, a fast closed-road bike leg, and a flat, crowd-lined run. As part of the global T100 series, it offers age-group qualification slots for the World Championship finals and embodies a redefined triathlon experience focused on celebration and community. Whether you're a first-timer or an elite competitor, join thousands of athletes for a weekend of electric atmosphere and unforgettable personal triumph. Secure your spot on one of the world's most iconic urban start lines.

Races Offered

100K Triathlon

Jul 26, 2026

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Distance — 2 km 80 km 18 km

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Type — Multisports

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07:00

Olympic Triathlon

Jul 26, 2026

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Distance — 1.5 km 40 km 10 km

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Type — Multisports

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07:00

Olympic Triathlon Relay

Jul 26, 2026

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Distance — 1.5 km 40 km 10 km

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Type — Multisports

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07:00

Sprint Triathlon

Jul 26, 2026

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Distance — 0.8 km 20 km 5 km

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Type — Multisports

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07:00

Sprint Triathlon Relay

Jul 26, 2026

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Distance — 0.8 km 20 km 5 km

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Type — Multisports

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07:00

Super Sprint Triathlon

Jul 26, 2026

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Distance — 0.4 km 10 km 2.5 km

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Type — Multisports

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07:00

Weather History

These values represent the 3-year monthly averages for July in London.

thermostat Temperature

14.3° / 22.4°

wb_sunny Feels like

12.6° / 20.0°

light_mode Avg sunshine hours

10h 57m

water_drop Avg rainfall

2.7 mm

ac_unit Avg snowfall

—

air Avg wind speed

13.3 km/h (Gentle breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.6)

humidity_mid Humidity

69.2%

wb_twilight Sunrise

05:03

nightlight Sunset

21:08

About London

Learn more about the host city, London.

Noisy, vibrant and truly multicultural, London is a megalopolis of people, ideas and frenetic energy. The capital and largest city of the United Kingdom sits on the River Thames in South-East England. Greater London has a population of a little over 9 million. Considered one of the world's leading "global cities", London remains an international capital of culture, music, education, fashion, politics, finance and trade. For the visitor, there is a seemingly endless choice of historical sites, shopping, museums, food, art galleries, nightlife, and activities. Once a Celtic settlement, London is a bustling city, where visitors come to experience the urban heritage and see its specific royal-themed attractions.