The calculated distance (air line) between Chom Thong and Prachantakham is approximately 74 miles respectively 119 kilometers.
By car or train, the actual journey to Prachantakham is certainly longer, as only the direct route (as the crow flies) between Chom Thong and Prachantakham has been calculated here.
Air line (approximately)
119 kilometers
64 nautical miles