The calculated distance (air line) between Thaba Nchu and Vanderbijlpark is approximately 183 miles respectively 295 kilometers.
By car or train, the actual journey to Vanderbijlpark is certainly longer, as only the direct route (as the crow flies) between Thaba Nchu and Vanderbijlpark has been calculated here.
Air line (approximately)
295 kilometers
159 nautical miles