The calculated distance (air line) between Chlumec nad Cidlinou and Chomutov is approximately 93 miles respectively 149 kilometers.
By car or train, the actual journey to Chomutov is certainly longer, as only the direct route (as the crow flies) between Chlumec nad Cidlinou and Chomutov has been calculated here.
Air line (approximately)
149 kilometers
80 nautical miles