The calculated distance (air line) between Dundee and Phuthaditjhaba is approximately 90 miles respectively 144 kilometers.
By car or train, the actual journey to Phuthaditjhaba is certainly longer, as only the direct route (as the crow flies) between Dundee and Phuthaditjhaba has been calculated here.
Air line (approximately)
144 kilometers
78 nautical miles