The calculated distance (air line) between Sint-Oedenrode and Amersfoort is approximately 41 miles respectively 66 kilometers.
By car or train, the actual journey to Amersfoort is certainly longer, as only the direct route (as the crow flies) between Sint-Oedenrode and Amersfoort has been calculated here.
Air line (approximately)
66 kilometers
35 nautical miles