The calculated distance (air line) between Niefern-Öschelbronn and Wiesbaden is approximately 84 miles respectively 135 kilometers.
By car or train, the actual journey to Wiesbaden is certainly longer, as only the direct route (as the crow flies) between Niefern-Öschelbronn and Wiesbaden has been calculated here.
Air line (approximately)
135 kilometers
73 nautical miles