You may not always be aware of your heart, but it's there. Beating around 100,000 times a day, keeping you alive. Fluttering through first kisses. Keeping the pace of your runs. Beating faster and filling with pride through life's defining moments.

Your heart is an extraordinary part of you. But it's also vulnerable. 

That's why the British Heart Foundation exists. We fund lifesaving medical research to beat the world's biggest killers.

Our vision is a world free from the fear of heart and circulatory diseases. We raise money to research cures and treatments, so we can give people more time with the ones they love.

From heart transplants and pacemakers to stents and portable defibrillators - it's all down to research. Research made possible by people like you, taking on extraordinary challenges like the TCS London Marathon.