The calculated distance (air line) between Fellbach and Steinheim an der Murr is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Steinheim an der Murr is certainly longer, as only the direct route (as the crow flies) between Fellbach and Steinheim an der Murr has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles