The calculated distance (air line) between Willowmore and Graaff-Reinet is approximately 94 miles respectively 151 kilometers.
By car or train, the actual journey to Graaff-Reinet is certainly longer, as only the direct route (as the crow flies) between Willowmore and Graaff-Reinet has been calculated here.
Air line (approximately)
151 kilometers
82 nautical miles