The calculated distance (air line) between Mohale's Hoek and Qacha’s Nek is approximately 73 miles respectively 117 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 Mohale's Hoek and Qacha’s Nek has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles