London Winter Run 2025. The uk's largest 10k will be back on sunday 23rd february 2025 for its 10th anniversary edition. The cancer research uk's london winter run on 23 february 2025 is a 10km road race through the heart of the capital.
Along the way, expect snowy surprises,. The 2025 cancer research uk london winter run is a 10k challenge through the heart of the city, passing world famous landmarks, and instantly recognisable areas that have been given.