London Marathon Events (LME) announced on Friday, June 19, that the TCS London Marathon 2027 will expand into a two-day event. Taking place on Saturday, April 24 and Sunday, April 25, 2027, this one-off format will allow 100,000 runners to cross the iconic finish line on The Mall over the course of the weekend.
London Marathon Events has said this is a “one-off format change.” Runners on both days will take on the same 26.2-mile route from Greenwich to Westminster. The double event allows more runners than ever to take part, helping meet the demand for places after 1.33 million people entered the ballot for the 2027 race.