The Double TCS London Marathon 2027

The TCS London Marathon takes place across two days in 2027, welcoming 100,000 runners to the streets of London for a historic Marathon Weekend.

The Double TCS London Marathon 2027 takes place across two days for a historic Marathon Weekend, welcoming 100,000 runners to the streets of London for the first and only time the event is held over Saturday and Sunday.

Dates: Saturday 24 April 2027 and Sunday 25 April 2027

Start time (countdown reference): 08.50am (24 April 2027)

Location: London, England

Participants can apply via routes including charity places and international tour operators, and can also enter the virtual TCS London Marathon.