The calculated distance (air line) between Khutir-Mykhailivskyi and Sumy is approximately 86 miles respectively 139 kilometers.
By car or train, the actual journey to Sumy is certainly longer, as only the direct route (as the crow flies) between Khutir-Mykhailivskyi and Sumy has been calculated here.
Air line (approximately)
139 kilometers
75 nautical miles