The calculated distance (air line) between Ludlow and Stourport-on-Severn is approximately 18 miles respectively 30 kilometers.
By car or train, the actual journey to Stourport-on-Severn is certainly longer, as only the direct route (as the crow flies) between Ludlow and Stourport-on-Severn has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles