TCS London Marathon 2025 The World famous race is a once in a life-time experience and with places limited this year, this is an opportunity not to be missed. Support Dogs has guaranteed charity places in the 2024 TCS London Marathon. This is an amazing opportunity to take part in this world-famous race along with 40,000 other runners. This iconic race takes in all of the sights of London and is a real 'must do' for runners and non-runners a-like. Cheered on by the best supporters in the world, it will be an experience like no other. London Marathon 2025 application form Manage Cookie Preferences