The calculated distance (air line) between Spittal an der Drau and Dornbirn is approximately 182 miles respectively 292 kilometers.
By car or train, the actual journey to Dornbirn is certainly longer, as only the direct route (as the crow flies) between Spittal an der Drau and Dornbirn has been calculated here.
Air line (approximately)
292 kilometers
158 nautical miles