The calculated distance (air line) between Dortmund and Sint-Oedenrode is approximately 86 miles respectively 139 kilometers.
By car or train, the actual journey to Sint-Oedenrode is certainly longer, as only the direct route (as the crow flies) between Dortmund and Sint-Oedenrode has been calculated here.
Air line (approximately)
139 kilometers
75 nautical miles