London Marathon to Run Over Two Days Starting in 2027

Organizers said the change will allow more runners to participate while managing course capacity and safety requirements. The current single-day event has operated under a smaller entry limit for several years.

Race officials have not yet released the split of entries between the two days or any adjustments to start times and course logistics. Runners who already hold deferred entries from prior years will be included in the new total. Further information on qualifying standards and registration windows is expected later this year.