The calculated distance (air line) between Kshenskiy and Nizhnedevitsk is approximately 35 miles respectively 56 kilometers.
By car or train, the actual journey to Nizhnedevitsk is certainly longer, as only the direct route (as the crow flies) between Kshenskiy and Nizhnedevitsk has been calculated here.
Air line (approximately)
56 kilometers
30 nautical miles