The calculated distance (air line) between Phasi Charoen and Lop Buri is approximately 76 miles respectively 123 kilometers.
By car or train, the actual journey to Lop Buri is certainly longer, as only the direct route (as the crow flies) between Phasi Charoen and Lop Buri has been calculated here.
Air line (approximately)
123 kilometers
66 nautical miles