The calculated distance (air line) between Krugersdorp and Phuthaditjhaba is approximately 180 miles respectively 290 kilometers.
By car or train, the actual journey to Phuthaditjhaba is certainly longer, as only the direct route (as the crow flies) between Krugersdorp and Phuthaditjhaba has been calculated here.
Air line (approximately)
290 kilometers
156 nautical miles