The calculated distance (air line) between Chon Buri and Chom Thong is approximately 40 miles respectively 64 kilometers.
By car or train, the actual journey to Chom Thong is certainly longer, as only the direct route (as the crow flies) between Chon Buri and Chom Thong has been calculated here.
Air line (approximately)
64 kilometers
35 nautical miles