The London Marathon is set to expand into a two-day event in 2027, with the race taking place on both Saturday and Sunday for the first time in its history. Both outlets report that the change is a historic scheduling decision aimed at allowing more participants. The revised weekend format is expected to increase capacity to 100,000 runners, a figure both sources cite as the planned scale of the event. The move would mark a departure from the traditional single-day arrangement, with organisers spreading the marathon across the weekend instead of running it on only one day. The decision reflects an effort to broaden access for entrants in a major international sporting event. The reports do not provide additional details on how the field will be divided between the two days or whether changes will affect other event activities. The 2027 edition will therefore represent a notable shift in the marathon’s format, with the main race scheduled across Saturday and Sunday to accommodate a larger field.