The calculated distance (air line) between Niedernhausen and Hofheim am Taunus is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Hofheim am Taunus is certainly longer, as only the direct route (as the crow flies) between Niedernhausen and Hofheim am Taunus has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles