How many miles between balham and south wimbledon?

Assuming you meant

• Balham, the electoral ward in the district Wandsworth and South Wimbledon tube station, the London Underground station in South London

Did you mean?

• Balham, the neighbourhood of south London, England, and is part of the London Borough of Wandsworth and the London Borough of Lambeth and South Wimbledon, the place in Surrey, England
• Balham station, consisting of two adjacent stations (a London Underground station and a National Rail station) located in the Balham area of south London, England and South Wimbledon, originally South Wimbledon (Merton), the London Underground station in South London
• Balham Station, the railway station on Balham Station Road, Balham, London, UK and South Wimbledon, originally South Wimbledon (Merton), the London Underground station in South London
• Balham station, consisting of two adjacent stations (a London Underground station and a National Rail station) located in the Balham area of south London, England and South Wimbledon, the locality in the London Borough of Merton in southwest London, England
• Balham Station, the railway station on Balham Station Road in Balham, London, UK and South Wimbledon, the locality in the London Borough of Merton in southwest London, England
• Balham, the place in Champagne-Ardenne, France and South Wimbledon, originally South Wimbledon (Merton), the London Underground station in South London
• Balham, the place in Champagne-Ardenne, France and South Wimbledon, the locality in the London Borough of Merton in southwest London, England
• Balham Limited, the business buying or selling own real estate based in North Lincolnshire and South Wimbledon, originally South Wimbledon (Merton), the London Underground station in South London
• Balham Limited, the business buying or selling own real estate based in North Lincolnshire and South Wimbledon, the locality in the London Borough of Merton in southwest London, England