The calculated distance (air line) between Oud-Turnhout and Schaerbeek is approximately 41 miles respectively 66 kilometers.
By car or train, the actual journey to Schaerbeek is certainly longer, as only the direct route (as the crow flies) between Oud-Turnhout and Schaerbeek has been calculated here.
Air line (approximately)
66 kilometers
35 nautical miles