Thousands of runners preparing for the London Marathon have been urged to reconsider their race outfits and pacing plans as warm weather is expected to hit the city on Sunday.
Forecasts show that temperatures could climb as high as 22°C during the 26.2-mile race.
Organisers have shared concerns that the sunny conditions, while pleasant for spectators, could create health risks for runners. Competitors are being asked to avoid heavy or elaborate costumes and to dress instead in lightweight clothing suitable for the warmer climate.
Medical teams are advising participants to slow their pace to cope with the heat. Runners are encouraged to wear thin caps to shield their faces from direct sun and to apply waterproof sunscreen to protect against prolonged exposure during the hours-long event.
An estimated 56,000 runners are expected to take part in this year’s marathon, making it one of the largest in history. If enough runners finish, London could surpass New York’s record of 55,646 finishers set last November.
The temperature at the start of the race is expected to be cooler and more comfortable. However, the heat is forecast to peak later in the afternoon around 4pm, which could make the final miles more challenging for those still on the course.
The Met Office has confirmed that dry and sunny conditions are likely for both the London and Manchester marathons. Early morning temperatures should be manageable, but they are set to rise steadily as the day goes on.
After the marathon, Londoners can expect even hotter days ahead. A mini heatwave is predicted, with temperatures possibly reaching 26°C by Wednesday, offering a taste of summer earlier than usual.
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