Epsom is a market town in Surrey, England, 13.6 miles (21.9 km) south south-west of London. The town straddles chalk downland (Epsom Downs) and the upper Thanet Beds. Epsom Downs Racecourse holds The Derby, now a generic name for sports competitions in English-speaking countries. The town also gives its name to Epsom salts, extracted from mineral waters there.
Epsom is the source of the Hogsmill River and includes the semi-rural Horton and Langley Vale.The A24 passes through the centre of the town.The M25 motorway can be joined at Junction 9 Leatherhead, via the A24 south.The B280 runs from Epsom (West Hill) through Malden Rushett (A243) to Oxshott.