The calculated distance (air line) between Weinstadt-Endersbach and Karlsruhe is approximately 46 miles respectively 73 kilometers.
By car or train, the actual journey to Karlsruhe is certainly longer, as only the direct route (as the crow flies) between Weinstadt-Endersbach and Karlsruhe has been calculated here.
Air line (approximately)
73 kilometers
40 nautical miles