The calculated distance (air line) between Guilers and Carhaix-Plouguer is approximately 46 miles respectively 75 kilometers.
By car or train, the actual journey to Carhaix-Plouguer is certainly longer, as only the direct route (as the crow flies) between Guilers and Carhaix-Plouguer has been calculated here.
Air line (approximately)
75 kilometers
40 nautical miles