The calculated distance (air line) between Berlin and Sępólno Krajeńskie is approximately 183 miles respectively 294 kilometers.
By car or train, the actual journey to Sępólno Krajeńskie is certainly longer, as only the direct route (as the crow flies) between Berlin and Sępólno Krajeńskie has been calculated here.
Air line (approximately)
294 kilometers
159 nautical miles