The calculated distance (air line) between Halle (Saale) and Hohenmölsen is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Hohenmölsen is certainly longer, as only the direct route (as the crow flies) between Halle (Saale) and Hohenmölsen has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles