The calculated distance (air line) between Byelaazyorsk and Kalinkavichy is approximately 177 miles respectively 284 kilometers.
By car or train, the actual journey to Kalinkavichy is certainly longer, as only the direct route (as the crow flies) between Byelaazyorsk and Kalinkavichy has been calculated here.
Air line (approximately)
284 kilometers
154 nautical miles