The calculated distance (air line) between Vyalikaya Byerastavitsa and Slutsk is approximately 147 miles respectively 237 kilometers.
By car or train, the actual journey to Slutsk is certainly longer, as only the direct route (as the crow flies) between Vyalikaya Byerastavitsa and Slutsk has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles