The calculated distance (air line) between Sint-Gillis-bij-Dendermonde and Antwerpen is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Antwerpen is certainly longer, as only the direct route (as the crow flies) between Sint-Gillis-bij-Dendermonde and Antwerpen has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles