The calculated distance (air line) between Castelnaudary and Labarthe-sur-Lèze is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to Labarthe-sur-Lèze is certainly longer, as only the direct route (as the crow flies) between Castelnaudary and Labarthe-sur-Lèze has been calculated here.
Air line (approximately)
47 kilometers
25 nautical miles