The calculated distance (air line) between Conflans-Sainte-Honorine and Amiens is approximately 63 miles respectively 101 kilometers.
By car or train, the actual journey to Amiens is certainly longer, as only the direct route (as the crow flies) between Conflans-Sainte-Honorine and Amiens has been calculated here.
Air line (approximately)
101 kilometers
54 nautical miles