The organizers of the London Marathon plan to split the event into two races held on two separate days next year. Multiple outlets report that the change will expand participation and effectively doubles the event’s scale. According to the available coverage, the updated format is intended to accommodate a much larger field, with expectations of about 100,000 runners in total. The reports do not indicate major changes to the marathon’s basic concept, but they describe the restructuring as a way to stage the race on two days rather than one. The decision reflects an operational shift for one of the world’s best-known long-distance events, including additional coordination for logistics, crowd management, and race-day operations across two dates. Details such as the specific number of runners per day, the exact dates, and how qualifying or entry will be managed are not included in the provided excerpts. Overall, the sources agree on the two-day split and the projection that runner participation will reach roughly 100,000 next year.