The calculated distance (air line) between Comblain-au-Pont and Mouscron is approximately 106 miles respectively 170 kilometers.
By car or train, the actual journey to Mouscron is certainly longer, as only the direct route (as the crow flies) between Comblain-au-Pont and Mouscron has been calculated here.
Air line (approximately)
170 kilometers
92 nautical miles