The calculated distance (air line) between Hollogne-aux-Pierres and Dendermonde is approximately 66 miles respectively 105 kilometers.
By car or train, the actual journey to Dendermonde is certainly longer, as only the direct route (as the crow flies) between Hollogne-aux-Pierres and Dendermonde has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles