The calculated distance (air line) between Nieder-Ingelheim and Hofheim am Taunus is approximately 18 miles respectively 30 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 Nieder-Ingelheim and Hofheim am Taunus has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles