The calculated distance (air line) between Stoke-on-Trent and Torquay is approximately 185 miles respectively 297 kilometers.
By car or train, the actual journey to Torquay is certainly longer, as only the direct route (as the crow flies) between Stoke-on-Trent and Torquay has been calculated here.
Air line (approximately)
297 kilometers
160 nautical miles