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