The calculated distance (air line) between Nachrodt-Wiblingwerde and Gelsenkirchen is approximately 26 miles respectively 42 kilometers.
By car or train, the actual journey to Gelsenkirchen is certainly longer, as only the direct route (as the crow flies) between Nachrodt-Wiblingwerde and Gelsenkirchen has been calculated here.
Air line (approximately)
42 kilometers
23 nautical miles