The Cancer Research UK London Winter Run is a ten kilometre challenge through the heart of the capital.

You will pass live music performances, encounter larger-than-life winter characters, and see world famous landmarks. It’s an unforgettable journey for runners of all abilities. Many choose to run only part of the route, walking at other points. Since its first edition in 2015 it has proved hugely popular, receiving critical acclaim, and becoming the largest 10k in the UK.

The event is delivered in partnership with Cancer Research UK, and has already seen over 100,000 people take part and over £7.8 million raised for life-saving cancer research.

Delighted runners have given the Cancer Research UK London Winter Run incredible reviews, with many returning annually to collect the latest edition of the much acclaimed finisher medal.

After an amazing edition in 2026 with over 26,000 signing up to taking part, the next edition will take place on Sunday 21st February 2027. You can expect many of your favourite features and creatures to return, plus some new surprises! Find out how to enter next year's event below.