The London Marathon could be shifted to an earlier slot in the calendar as hugh brasher says rising spring temperatures are becoming harder to ignore. The event’s chief confirmed the race is examining future date options as conditions warm and runner safety stays central. The discussion comes after the 2025 race brought temperatures near 22C, adding fresh urgency to the issue.
Heat is now part of the conversation
Brasher said the race must weigh health, safety, and cooling needs more carefully as the climate changes. He said the event has been considering this for years and will keep doing so with proper data. That position gained sharper focus after the 2025 race, while the 2018 edition remains the warmest on record at 24. 2C.
This year’s race, held on Sunday, 26 April, is expected to be far more favourable for runners chasing personal bests, with temperatures forecast between 11C and 17C for the duration of the race. Even so, the possibility of a future date shift is now firmly part of the planning conversation. The issue is no longer abstract: hugh brasher framed it as a practical response to a warming world.
What Brasher said about the wider debate
Brasher said the London Marathon has watched other events closely, including Paris Marathon’s decision to move away from single-use water cups and bottles for runners. He said London examined that approach with interest and has been assessing climate-related questions alongside sustainability planning. The race already uses a system that gives runners Buxton Natural Mineral Water at set points on the course, while also relying on recycled plastic bottles and separate cleaning teams.
He also said the marathon has an employee run the Paris Marathon to gather feedback, while the event continues to review its broader environmental footprint. Brasher pointed to electric and solar generators, recycled materials, and finisher T-shirt design as part of a larger sustainability push. In his view, the debate is not only about one race day, but about how the event operates as a whole.
Immediate reactions and the practical stakes
“So, absolutely, the world is heating up, ” Brasher said on a media call. “People go, well, would you move the London Marathon? Of course we would move it. ” He added that the race used to take place on 29 March, showing that the calendar has already changed before. The message was clear: flexibility is on the table if conditions keep shifting.
Brasher also said the race looks at sustainability through people, profit, and planet, and that the current system is designed to be circular where possible. He described the marathon’s carbon removal charge for international participants as part of that approach. The debate now sits at the intersection of athlete welfare, logistics, and environmental pressure.
What happens next
For now, the London Marathon remains on its current date, but the conversation over timing is no longer hypothetical. Any future move would depend on data, temperatures, and the balance of practical demands that Brasher says must be weighed carefully. The issue is likely to stay active as more major races confront similar climate pressure, and hugh brasher has made clear that London is prepared to keep reviewing its options.
