The calculated distance (air line) between Bronkhorstspruit and Vanderbijlpark is approximately 84 miles respectively 135 kilometers.
By car or train, the actual journey to Vanderbijlpark is certainly longer, as only the direct route (as the crow flies) between Bronkhorstspruit and Vanderbijlpark has been calculated here.
Air line (approximately)
135 kilometers
73 nautical miles