The calculated distance (air line) between Leppävirta and Seinäjoki is approximately 159 miles respectively 255 kilometers.
By car or train, the actual journey to Seinäjoki is certainly longer, as only the direct route (as the crow flies) between Leppävirta and Seinäjoki has been calculated here.
Air line (approximately)
255 kilometers
138 nautical miles