Sun 6 Aug 2023 London, UK

London Triathlon | Olympic

Take on the London Triathlon Olympic distance while soaking up the view of London’s world-famous landmarks. Charity places now available for 2023.

Get charity place
  • Sun 6 Aug 2023
Excel London, London




Age 17 & over on 31 Dec 2023

  • 1500 m dock swimming
  • 40 km road cycling
  • 10 km road running


Show London what you're made of this summer, whether you're new to swim-bike-run or whether you're up for a bigger triathlon challenge - everyone is welcome at the London Triathlon.

This reputable event gives you the opportunity to swim in the Thames from London Docklands, race past Westminster, Big Ben, the London Eye and the Houses of Parliament on closed roads and run in the impressive 2012 Olympic venue, the ExCel.


  • World's biggest city centre triathlon

    Welcomes 13,000 triathletes every year.

  • Prestigious venues and landmarks

    Event hub at the 2012 Olympic venue, the ExCel, plus world-famous London sights.

  • All levels of triathlete welcome

    Newcomers, experienced, or single-discipline swimmers, cyclists and runners for the relay.

  • Features relay events

    Over short or longer distances for teams of three.

  • Extreme Weekend Warrior challenge

    Complete as many back-to-back triathlons as you can in one weekend.

This event is part of London Triathlon.

  • Event expo
  • Event village
  • Free venue entry
  • Newcomers
  • Spectators
  • Teams
  • Traders at event


The London Triathlon Expo is the UK's largest triathlon exhibition and brings together the latest kit, advice and experts to the weekend of action.

  • Cafe
  • Toilets
  • Urban

Event HQ

Excel London
Greater London
E16 1XL

  • Distance markers
  • First aid
  • Marshals
  • Multiple laps
  • No headphones
  • Traffic free
  • Water stations
  • Wave start
  • Way markers

The opening swim takes place in London Docklands; you’ll then transition to your bike inside the Olympic venue of the Excel. You’ll then follow a closed road cycle route taking in some of London’s best land marks roughly following the Thames – this section is made up of multiple laps. A final transition inside the Excel before running in and around the building itself.

  • Carbon neutral
  • Public transport links
  • Recycling
  • Sustainability policy

LimeLight Sports positively contributes to these Sustainable Development Goals:


  • Clean water and sanitation
  • Affordable and clean energy
  • Industry, innovation and infrastructure
  • Responsible consumption and production
  • Climate action
  • Life below water

  • Chip timing
  • Medal


  • Security wristband
  • 2 x bike numbers
  • Race number
  • Timing chip 
  • Finisher’s medal
  • Free event branded swim hat
  • Post-event hydration
  • Closed road course

Every year thousands of people take part in this event and fundraise for charity. While this is hugely beneficial to the charities it gives the participant advantages too, from supporting a cause that is close to your heart to securing a place in this highly sought-after event and much more.

Benefits of taking part for charity

Committing to raising money for charity gives you motivation to get outside and train, plus all of these extras which will elevate your event experience:

  • Fundraising support

    Charities know that raising money is all part of the challenge, which is why they provide advice, branded materials and a personalised online fundraising page to help the donations roll in. Think videos for social media, branded imagery and testimonials from previous runners.

  • Training support

    Whether this is your first triathlon or your fifth, you'll need to train for it! You'll receive an in-depth training plan with guidance, plus many charities have access to expert coaches and elites too, who can provide exclusive tips for your race preparation. Experts include Runningwithus, Full Potential and Olympic champions.

  • Branded kit

    When you show up on the big day, people will be able to see clearly that you're supporting a charity. Most charities will give you a branded and personalised t-shirt or vest to wear on the big day, and often a swim hat too.

  • Support on the day

    When you're partway through your event and your energy is flagging, what you need is a boost from cheering spectators to keep you moving. Many charities set up a cheer station along the route, keeping an eye out for you to send up a huge cheer as you go past!

  • Post-race recovery

    Refreshments and an indulgent post-race sports massage are often provided by charities for their supporters. This is the perfect way to recover alongside other people who have taken part for that cause.

  • Exclusive social groups

    You won't be the only person taking part for that charity, so it's well worth meeting other participants through the charity's invite-only social media pages! You can organise training sessions, chat with the charity's expert coaches and share tips and stories with each other to keep the motivation levels running high.

What are charity places?

Charities buy places in this event, then give them to supporters who agree to raise money for the charity – these are called charity places. Charity places are a great way to support a good cause and get a place in the event, especially if general entries are closed.

Triathlons and charity fundraising go hand-in-hand - which charity will you choose?

Charity places

These charities have places in the event. To secure your place, select a charity, complete the form and follow the instructions.

Human rights

Refugee Action

Helping refugees build safe, hopeful and productive new lives in the UK.

  • Technical t-shirt
  • Running vest
  • Fundraising support
  • Fundraising materials
  • Fundraising incentives
  • Dedicated contact

Sign up


Health and Medical


Providing care and support to those affected by the painful genetic skin condition Epidermolysis Bullosa (EB), which could affect any one of us.

  • Running vest
  • Fundraising support
  • Fundraising materials
  • Dedicated contact

Sign up



Great Ormond Street Hospital Children's Charity

Helping the hospital offer a better future to seriously ill children across the UK.

  • T-shirt
  • Fundraising support
  • Dedicated contact

Sign up



St Joseph's Hospice

Providing the highest quality hospice care to help people live their lives to the full.

  • Running vest
  • Fundraising support
  • Fundraising materials
  • Dedicated contact

Sign up


Mental health


Supporting those affected by mental illness to change mental health for good.

  • T-shirt
  • Fundraising support
  • Dedicated contact

Sign up



Childhood First

For children aged 5-18 who have experienced severe abuse, neglect and early-life trauma.

  • Running vest
  • Fundraising support
  • Fundraising materials
  • Fundraising incentives
  • Dedicated contact
  • Certificate
  • Submit fundraising up to 1 month after event

Sign up


  • Age 17 & over on 31 Dec 2023
  • Entries open
  • Charity entries open
  • Charity places
  • Collect race pack
  • Enter online
  • Insurance available

Entry fees

Entry fee