The calculated distance (air line) between Pernes-les-Fontaines and Clermont-Ferrand is approximately 156 miles respectively 252 kilometers.
By car or train, the actual journey to Clermont-Ferrand is certainly longer, as only the direct route (as the crow flies) between Pernes-les-Fontaines and Clermont-Ferrand has been calculated here.
Air line (approximately)
252 kilometers
136 nautical miles