London Marathon organisers are actively exploring the possibility of transforming the iconic race into a two-day event in 2027, a move designed to dramatically increase participation numbers and accommodate unprecedented public interest.
Record-Breaking Applications Drive Expansion Plans
The consideration comes amid staggering demand for marathon places. For the 2026 edition scheduled for April 26, a world record 1,133,813 runners applied through the public ballot system. This figure represents a substantial 36 per cent increase compared to the previous year and nearly doubles the total application pool from 2024.
Building on Historic Success
The push for expansion follows an exceptionally successful 2025 London Marathon. Last year's event raised £87.3 million for charity, the highest amount in the marathon's history. It also set a Guinness World Record for the most finishers in a single marathon, with 56,640 participants crossing the finish line despite challenging sweltering conditions in the capital.
A spokesperson for the London Marathon organisation stated: "The TCS London Marathon is the world's most popular marathon, and we are continually exploring innovative ways to enable more people to take part, while delivering positive benefits for London."
The spokesperson elaborated on the specific proposal: "Together with our partners and stakeholders, we are looking at the intention for the 2027 TCS London Marathon to take place across two days. No approval has been given at this stage. Our immediate focus is on delivering an incredible 2026 TCS London Marathon on Sunday 26 April and ensuring every participant has an amazing experience."
Potential Format and Scale of the Two-Day Event
According to reports, including one from the Guardian, the proposed two-day format for 2027 would be a one-off expansion designed to accommodate up to 100,000 participants. This significant increase from current numbers could involve splitting the elite men's and women's races across the weekend, potentially creating distinct competitive and mass participation days.
Support from City Leadership
The initiative has garnered attention from London's leadership. A spokesperson for the Mayor of London commented: "London is the sporting capital of the world and the Mayor looks forward to working with London Marathon partners to consider if it might be possible to host an event that will run across two days next year." This statement underscores the event's importance to the city's cultural and sporting landscape.
The exploration of a two-day format represents a bold response to the marathon's growing popularity and its role as a major fundraising and community event. While plans remain preliminary and subject to approval, the discussion highlights organisers' commitment to innovation and inclusion in one of the world's premier long-distance running events.
