The calculated distance (air line) between Rychnov nad Kněžnou and Jihlava is approximately 61 miles respectively 98 kilometers.
By car or train, the actual journey to Jihlava is certainly longer, as only the direct route (as the crow flies) between Rychnov nad Kněžnou and Jihlava has been calculated here.
Air line (approximately)
98 kilometers
53 nautical miles