The calculated distance (air line) between Stourport-on-Severn and Walsall is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Walsall is certainly longer, as only the direct route (as the crow flies) between Stourport-on-Severn and Walsall has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles