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