The calculated distance (air line) between Zaporizhzhya and Siverskodonetsk is approximately 172 miles respectively 277 kilometers.
By car or train, the actual journey to Siverskodonetsk is certainly longer, as only the direct route (as the crow flies) between Zaporizhzhya and Siverskodonetsk has been calculated here.
Air line (approximately)
277 kilometers
149 nautical miles