- fill in the enquiry form for full details
The London Triathlon is the world’s biggest triathlon welcoming over 13,000 triathletes of all ages and abilities to swim, bike and run around the spectacular city route. Challenging, yet achievable, the distance is our most popular distance. You can compete in either single sex or mixed waves or as a Team Relay.
With 30,000 spectators every year, this must-do event is one of the most iconic in the triathlon calendar.
A triathlon will push you to your limits like no other endurance event. It’s level of difficulty could only be matched by the sense of joy and achievement that comes with crossing the finish line, knowing you’ve given it everything.
To secure your charity place in London Triathlon - sprint, fill in the yellow enquiry form to find out everything you need to know about taking part.
SIGN UP FOR £1 + MINIMUM SPONSORSHIP
With a Macmillan charity place, you will get an amazing level of support.
You'll receive a dedicated triathlon training and fundraising guide and free Macmillan technical running vest or t-shirt. You’ll also receive regular enewsletters packed with training and fundraising advice and the option to order a free Macmillan tri belt, swimming cap and wetsuit arm band.
Finally, nothing beats our support on the course whatever the weather and no matter what your start/finishing time is. Most importantly we'll provide you with a reason to put in those months of training and fundraising, because you'll know that your efforts are going towards improving the lives of people living with cancer in the UK today.
"Every time I came running round the corner on the last leg, you guys kept me going." - Steve, Team Macmillan athlete
Want to list your event?Register here and list it free!
Need to update your event?Login here
No one should have to face cancer alone.
Macmillan Cancer Support wants to make sure no one has to face cancer alone. A cancer diagnosis can change everything, so we're here to help you with anything from money worries to advice about work, healthcare options to just needing someone to talk to. We're a constant source of support to people affected by cancer and their families and carers.
As treatments improve, more and more people are living with cancer in their daily lives. We fund specialist health care professionals and build cancer care centres to help provide cutting edge support.
We rely completely on our supporters to help us make sure that people facing the toughest fight of their lives don't have to do it alone.
Sign up now & get the latest event updates in your Inbox every week!
Inspired by the London Marathon? Now's the perfect time to get into running.
It's Easter and we highlight some ideas for weekend warriors in 2017 as well as the best events to go and support them.
Go the distance with these extreme runs, rides, walks and triathlons in the UK and around the world.
Is this the ultimate year-round multi-activity destination?
Things to do in an urban environment - everything from city walks to traffic-free rides.
Limited charity places are available from
Macmillan Cancer Support for
London Triathlon - sprint on
Fill in the enquiry form to find out everything you need to know about taking part:
Westminster 10K - 9 July
Great North Run - 10 September
Ripley Castle – 2 July
10K Enchanted walk -
October 1 – 2K, 10K or Half Marathon
70 miles - 17 June
Great South Run - October 22
Discover Liverpool by foot - 1 July
8-day walking adventure in Tirol
3 June - The perfect family day out