The calculated distance (air line) between Guilherand-Granges and Clermont-Ferrand is approximately 105 miles respectively 168 kilometers.
By car or train, the actual journey to Clermont-Ferrand is certainly longer, as only the direct route (as the crow flies) between Guilherand-Granges and Clermont-Ferrand has been calculated here.
Air line (approximately)
168 kilometers
91 nautical miles