The calculated distance (air line) between Dortmund and Aarle-Rixtel is approximately 79 miles respectively 126 kilometers.
By car or train, the actual journey to Aarle-Rixtel is certainly longer, as only the direct route (as the crow flies) between Dortmund and Aarle-Rixtel has been calculated here.
Air line (approximately)
126 kilometers
68 nautical miles