The calculated distance (air line) between Dortmund and Broek op Langedijk is approximately 138 miles respectively 223 kilometers.
By car or train, the actual journey to Broek op Langedijk is certainly longer, as only the direct route (as the crow flies) between Dortmund and Broek op Langedijk has been calculated here.
Air line (approximately)
223 kilometers
120 nautical miles