The calculated distance (air line) between Krugersdorp and Bronkhorstspruit is approximately 63 miles respectively 101 kilometers.
By car or train, the actual journey to Bronkhorstspruit is certainly longer, as only the direct route (as the crow flies) between Krugersdorp and Bronkhorstspruit has been calculated here.
Air line (approximately)
101 kilometers
55 nautical miles