The calculated distance (air line) between Dokuchaievsk and Zaporizhzhya is approximately 119 miles respectively 192 kilometers.
By car or train, the actual journey to Zaporizhzhya is certainly longer, as only the direct route (as the crow flies) between Dokuchaievsk and Zaporizhzhya has been calculated here.
Air line (approximately)
192 kilometers
103 nautical miles