The calculated distance (air line) between Bakhchysarai and Pervomayskoye is approximately 66 miles respectively 107 kilometers.
By car or train, the actual journey to Pervomayskoye is certainly longer, as only the direct route (as the crow flies) between Bakhchysarai and Pervomayskoye has been calculated here.
Air line (approximately)
107 kilometers
58 nautical miles