The calculated distance (air line) between Soweto and Phuthaditjhaba is approximately 167 miles respectively 268 kilometers.
By car or train, the actual journey to Phuthaditjhaba is certainly longer, as only the direct route (as the crow flies) between Soweto and Phuthaditjhaba has been calculated here.
Air line (approximately)
268 kilometers
145 nautical miles