The calculated distance (air line) between Mpumalanga and Qacha’s Nek is approximately 118 miles respectively 191 kilometers.
By car or train, the actual journey to Qacha’s Nek is certainly longer, as only the direct route (as the crow flies) between Mpumalanga and Qacha’s Nek has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles