The calculated distance (air line) between Junín and Santo Domingo de los Colorados is approximately 85 miles respectively 137 kilometers.
By car or train, the actual journey to Santo Domingo de los Colorados is certainly longer, as only the direct route (as the crow flies) between Junín and Santo Domingo de los Colorados has been calculated here.
Air line (approximately)
137 kilometers
74 nautical miles