This is the classic triathlon distance and is also known as 'Olympic' distance, having been introduced to the Games in 2000.
It involves a 1.5km swim, a 40km bike ride and a 10km run - it's the format at which the Brownlee brothers excel. You need to be at least 17 years old to enter.
To refine your search, click + on the blue filters.
Want to list your event?Register here and list it free!
Need to update your event?Login here
Sign up now & get the latest event updates in your Inbox every week!
Signing up for a challenge, event and trip can act as a great motivator - do it now!
Be inspired to get active outside - from camping to climbing - as we focus on the Outdoor Adventure Show in London.
How signing up for an event, challenge or trip can boost your motivation.
The Great North Run, Royal Parks and RideLondon ballots are about to be announced - we focus on what makes these so special.
Lots of ideas for active breaks for teams, families or groups - in the UK, Europe and beyond.