The calculated distance (air line) between Jalasjärvi and Jyväskylä is approximately 97 miles respectively 156 kilometers.
By car or train, the actual journey to Jyväskylä is certainly longer, as only the direct route (as the crow flies) between Jalasjärvi and Jyväskylä has been calculated here.
Air line (approximately)
156 kilometers
84 nautical miles