The calculated distance (air line) between Santa María Zacatepec and Coyoacán is approximately 54 miles respectively 87 kilometers.
By car or train, the actual journey to Coyoacán is certainly longer, as only the direct route (as the crow flies) between Santa María Zacatepec and Coyoacán has been calculated here.
Air line (approximately)
87 kilometers
47 nautical miles