The calculated distance (air line) between Senekal and Phuthaditjhaba is approximately 74 miles respectively 119 kilometers.
By car or train, the actual journey to Phuthaditjhaba is certainly longer, as only the direct route (as the crow flies) between Senekal and Phuthaditjhaba has been calculated here.
Air line (approximately)
119 kilometers
64 nautical miles