The calculated distance (air line) between Savannakhet and Maha Sarakham is approximately 100 miles respectively 162 kilometers.
By car or train, the actual journey to Maha Sarakham is certainly longer, as only the direct route (as the crow flies) between Savannakhet and Maha Sarakham has been calculated here.
Air line (approximately)
162 kilometers
87 nautical miles