The calculated distance (air line) between Sint-Gillis-bij-Dendermonde and Kortrijk is approximately 39 miles respectively 63 kilometers.
By car or train, the actual journey to Kortrijk is certainly longer, as only the direct route (as the crow flies) between Sint-Gillis-bij-Dendermonde and Kortrijk has been calculated here.
Air line (approximately)
63 kilometers
34 nautical miles