Horsham railway station serves the town of Horsham in West Sussex, England. It is on the Arun Valley Line 38 miles (61 km) south of London Victoria and the Sutton & Mole Valley Lines, and train services are provided by Southern. Services on the Sutton & Mole Valley Line from London Victoria via Dorking terminate here, the others continue into the Arun Valley: a half hourly service from London Victoria to Southampton Central or Portsmouth Harbour (alternating) and Bognor Regis.