The calculated distance (air line) between Höchst im Odenwald and Gelsenkirchen is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to Gelsenkirchen is certainly longer, as only the direct route (as the crow flies) between Höchst im Odenwald and Gelsenkirchen has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles