The calculated distance (air line) between Dannstadt-Schauernheim and Karlsruhe is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Karlsruhe is certainly longer, as only the direct route (as the crow flies) between Dannstadt-Schauernheim and Karlsruhe has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles