The calculated distance (air line) between Huy-Neinstedt and Dortmund is approximately 151 miles respectively 243 kilometers.
By car or train, the actual journey to Dortmund is certainly longer, as only the direct route (as the crow flies) between Huy-Neinstedt and Dortmund has been calculated here.
Air line (approximately)
243 kilometers
131 nautical miles