The calculated distance (air line) between Ober-Saulheim and Wuppertal is approximately 106 miles respectively 170 kilometers.
By car or train, the actual journey to Wuppertal is certainly longer, as only the direct route (as the crow flies) between Ober-Saulheim and Wuppertal has been calculated here.
Air line (approximately)
170 kilometers
92 nautical miles