The calculated distance (air line) between Desborough and Kirby Muxloe is approximately 21 miles respectively 35 kilometers.
By car or train, the actual journey to Kirby Muxloe is certainly longer, as only the direct route (as the crow flies) between Desborough and Kirby Muxloe has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles