The calculated distance (air line) between Benátky nad Jizerou and Chomutov is approximately 63 miles respectively 101 kilometers.
By car or train, the actual journey to Chomutov is certainly longer, as only the direct route (as the crow flies) between Benátky nad Jizerou and Chomutov has been calculated here.
Air line (approximately)
101 kilometers
55 nautical miles