The calculated distance (air line) between Niefern-Öschelbronn and Eppingen is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Eppingen is certainly longer, as only the direct route (as the crow flies) between Niefern-Öschelbronn and Eppingen has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles