The Coral Marathon is a Listedflathorse race in Great Britain open to horses aged four years and over. It is run at Sandown over a distance of 2 mile and 50 yards (3,264 metres), and it is scheduled to take place each year in July.
The race was first run in 2003 and is registered as the Esher Stakes. It takes place at the same meeting as Sandown Park's most prestigious and valuable flat race, the Eclipse Stakes.