The calculated distance (air line) between Blackpool and Lytham St Annes is approximately 6 miles respectively 9 kilometers.
By car or train, the actual journey to Lytham St Annes is certainly longer, as only the direct route (as the crow flies) between Blackpool and Lytham St Annes has been calculated here.
Air line (approximately)
9 kilometers
5 nautical miles