The calculated distance (air line) between Aurinkolahti and Lappeenranta is approximately 119 miles respectively 191 kilometers.
By car or train, the actual journey to Lappeenranta is certainly longer, as only the direct route (as the crow flies) between Aurinkolahti and Lappeenranta has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles