The calculated distance (air line) between Rivne and Ivano-Frankivsk is approximately 136 miles respectively 218 kilometers.
By car or train, the actual journey to Ivano-Frankivsk is certainly longer, as only the direct route (as the crow flies) between Rivne and Ivano-Frankivsk has been calculated here.
Air line (approximately)
218 kilometers
118 nautical miles