The calculated distance (air line) between Leinefelde-Worbis and Bielefeld is approximately 89 miles respectively 143 kilometers.
By car or train, the actual journey to Bielefeld is certainly longer, as only the direct route (as the crow flies) between Leinefelde-Worbis and Bielefeld has been calculated here.
Air line (approximately)
143 kilometers
77 nautical miles