The calculated distance (air line) between Meri-Rastila and Lappeenranta is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Lappeenranta is certainly longer, as only the direct route (as the crow flies) between Meri-Rastila and Lappeenranta has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles