The London Triathlon is the world's largest triathlon and London's only major triathlon. Attracting over 13,000 participants and 30,000 spectators each year, this iconic event has become a must do event in the sporting calendar. 

On Saturday there will be a 'Super Sprint' and 'Sprint' distance:

Super Sprint

400m swim, 10km bike, 2.5km run

Sprint

750m swim, 20km bike, 5km run 

On Sunday there will be an 'Olympic' and 'Olympic Plus' distance:

Olympic

1500m swim, 40km cycle, 10km run

Olympic Plus

1500m swim, 80km cycle, 10km run

Participating for Alzheimer’s Society

We'd love to have you on Team Alzheimer's Society, and you'll be helping to change the lives of people affected by dementia. You’ll pay a registration fee of £26 and have a fundraising target of £400, and we’ll support you through every step of your journey.

Sign up now

When you run for us, you'll receive:

• a free running top to wear on the day
• detailed training guides for different abilities and personalised support from our experts
• support from our dedicated events team to help you smash your fundraising target

Fundraising for Alzheimer's Society

We know that fundraising can be just as challenging as the event, but our expert team will be on hand to help. We’ll be in regular contact with support, advice and ideas.

JustGiving

Kick-start your fundraising by setting up a JustGiving page. You can easily share your page with your friends, family and colleagues on social media and email, plus everything happens automatically.

The money you donate is sent to us, Gift Aid collected, and your sponsors thanked. Job done!