2-3 august
|
London
100KM
Triathlon
2025 – Be The First To Hear!
"*" indicates required fields
Distance
100 KM
Swim
2 km
Bike
80 km
Run
18 km
Don't miss out for 2025
Following the sell out of our 2024 event, now is your chance to be first in line for 2025! Join thousands of athletes from around the globe in one of the largest and most iconic triathlons in the world.
Â
The London T100 Triathlon offers a unique and unforgettable race experience that you won’t find anywhere else. Feel the rush as you pass by the Tower Bridge, the London Eye, and other unique landmarks, all while being cheered on by enthusiastic crowds lining the route.
Start your T100 journey today
Register your interest now for the 2025 event. By signing up early you’ll be first in line when tickets go on sale as well as hearing about special offers and important updates. Don’t miss out on the chance to be part of one of the world’s most prestigious triathlons.
Benefits
You Won't Want To Miss This!
The Ultimate Test for all abilities
Whether you're new to tri or a seasoned competitor, the London T100 Triathlon has a challenge for everyone.
UNIQUE RACE PACK WITH ENTRY
Included with every triathlon entry is your Official T100 race T-Shirt, Race Bag/Drawstring Bag, and much more.
FOLLOW IN THE PROS' FOOTSTEPS
Join the global triathlon family and race on the closed roads just like the world's top professional triathletes.
Race On The Streets Of London
Line up in Britain’s capital and join one of the world’s biggest triathlons, as you race past iconic sites like Big Ben.
Enter The Race
Sold Out!
The 2023 PTO Asian Open held in Singapore’s awe-inspiring Marina Bay offers an unprecedented swim location and spectacular city circuit course, for a one of a kind event not to be missed.
28
July
100km
Super Early Bird
100km Triathlon
Distance
100KM
Swim
2KM
Bike
80KM
Run
18KM
28
July
100km
Early Bird
100km Triathlon
Distance
100KM
Swim
2KM
Bike
80KM
Run
18KM
28
July
100km
General Entries
100km Triathlon
Distance
100KM
Swim
2KM
Bike
80KM
Run
18KM
28
July
100km
Final Entries
100km Triathlon
Distance
100KM
Swim
2KM
Bike
80KM
Run
18KM
GENERAL REFUNDS
We understand that sometimes things just don’t go to plan! That’s why we have an industry leading refund policy to help you feel confident in signing up for our events.
- 50% refund until 30 days prior to race day (request in writing)
- 25% up to 7 days prior to race day (request in writing)
- No refund after 7 days prior to race day
Contact Us
Need help or have more questions? Don’t hesitate to get in touch.
Gallery
2023 moments
Other events
London T100 hosts a selection of triathlon event distances so no matter your experience or ability, there’s the chance to take in this iconic race on closed roads.
