The calculated distance (air line) between Hannoversch Münden and Heilbad Heiligenstadt is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Heilbad Heiligenstadt is certainly longer, as only the direct route (as the crow flies) between Hannoversch Münden and Heilbad Heiligenstadt has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles