Kempton, home of the King George VI Chase, could be closed for housing redevelopment from 2021.
The planned £500 million of investments to be made in the sport in a 10-year plan proposed by the Jockey Club would see Kempton proposed as a future redevelopment site, with a new all-weather venue to be built if that idea goes ahead.
The Jockey Club's land at The Links in Newmarket is the front-runner as the location for a new floodlit artificial track, with the King George switching to Sandown.
The Kempton estate - on which it is anticipated any future development on racecourse land would be from 2021 at the earliest, subject to a successful planning process - has been submitted for consideration.
However, the Jockey Club insists Kempton will only be redeveloped if the move will generate in excess of "100m investment and the proposed all-weather circuit at Newmarket is given the green light£.