Racing chiefs are monitoring forecasts as temperatures soar during the UK heatwave.
Fixtures scheduled for the start of next week will be assessed – and may be abandoned if it is too hot.
The Met Office has extended its danger-to-life weather warning for England and Wales to Tuesday. Highs of 36C are predicted on the day, when Southwell, Chelmsford, Wolverhampton and Musselburgh racecourses are due to hold race meetings.