One-off double TCS London Marathon will take place over two days in April 2027; the Elite Men and Men’s Wheelchair races will be held on Saturday April 24, with the Elite Women and Women’s Wheelchair races the following day
Last Updated: 30/09/26 9:22pm
The event schedule for next year’s historic double TCS London Marathon has been decided by a rock, paper, scissors contest between two former winners.
The 2027 edition will be a one-off, two-day event from April 24-25, with a record 100,000 participants scheduled to take part across the iconic course from Greenwich to Westminster.
It was previously not confirmed which elite races would run on each of the two days, with defending men’s champion Sabastian Sawe – who broke the historic two-hour barrier in last year’s victory – brought in to help finalise the schedule.
Sabastian Sawe became the first person to run a sub-two-hour marathon
Sawe and Catherine Debrunner, a four-time London champion who set the current women’s wheelchair marathon record in 2023, took part in a best-of-three Rock, Paper, Scissors battle to select their chosen race date.
Both athletes wanted to select Sunday, the traditional day for the marathon, with Debrunner claiming the victory and ensuring the elite women’s and elite women’s wheelchair races will take place on Sunday April 25.
Sabastian Sawe was part of the rock, paper, scissors contest to decide the dates for the 2027 London Marathon
The unique marathon weekend will begin with the Elite Men and Men’s Wheelchair races on the Saturday, while mass events – containing a mix of male, female and non-binary participants – will take place across both days.
Hugh Brasher, CEO of London Marathon Events, said: “The 2027 Double TCS London Marathon will be a momentous one-off event, and Sabastian and Catherine’s battle was an entertaining way to decide which day would host each elite race.
“We can now look forward to two spectacular days of elite racing, with the men opening the weekend on Saturday 24 April and the women launching the second day on Sunday 25 April. The competition may not be quite so friendly when race weekend arrives!
“Splitting the elite races will allow us to shine an even brighter spotlight on the extraordinary athletes taking part.”
The two-day event is expected to create the largest fundraising moment in UK sporting history, with more than £150m ($200m) will be raised for charitable causes at next year’s event.

