The calculated distance (air line) between Santo Tomás La Unión and Chimaltenango is approximately 40 miles respectively 64 kilometers.
By car or train, the actual journey to Chimaltenango is certainly longer, as only the direct route (as the crow flies) between Santo Tomás La Unión and Chimaltenango has been calculated here.
Air line (approximately)
64 kilometers
34 nautical miles