The calculated distance (air line) between Niedernhausen and Bad Homburg vor der Höhe is approximately 14 miles respectively 23 kilometers.
By car or train, the actual journey to Bad Homburg vor der Höhe is certainly longer, as only the direct route (as the crow flies) between Niedernhausen and Bad Homburg vor der Höhe has been calculated here.
Air line (approximately)
23 kilometers
12 nautical miles