Running & Marathons

TCS London Marathon 2027

London, UKApril 24 to 25

A one-off two-day London Marathon, 24 and 25 April, with 100,000 runners over the weekend on the Greenwich to Westminster route. Late April in London can be anything from cold rain to the first warm day of the year.

  • SaturdaySaturday, April 249 AM–5 PM
  • SundaySunday, April 259 AM–5 PM
Forecast tracking begins April 9, 15 days before the event.
Forecast tracking powered by LucidSky — honest weather with uncertainty ranges.