The calculated distance (air line) between Erfurt and Schwarzenbach an der Saale is approximately 66 miles respectively 105 kilometers.
By car or train, the actual journey to Schwarzenbach an der Saale is certainly longer, as only the direct route (as the crow flies) between Erfurt and Schwarzenbach an der Saale has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles