The calculated distance (air line) between Petegem-aan-de-Leie and Mouscron is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Mouscron is certainly longer, as only the direct route (as the crow flies) between Petegem-aan-de-Leie and Mouscron has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles