The calculated distance (air line) between Evere and Heist-op-den-Berg is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Heist-op-den-Berg is certainly longer, as only the direct route (as the crow flies) between Evere and Heist-op-den-Berg has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles