The calculated distance (air line) between Spittal an der Drau and Feldkirch is approximately 186 miles respectively 300 kilometers.
By car or train, the actual journey to Feldkirch is certainly longer, as only the direct route (as the crow flies) between Spittal an der Drau and Feldkirch has been calculated here.
Air line (approximately)
300 kilometers
162 nautical miles