The calculated distance (air line) between Nachrodt-Wiblingwerde and Bergkamen is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Bergkamen is certainly longer, as only the direct route (as the crow flies) between Nachrodt-Wiblingwerde and Bergkamen has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles