The calculated distance (air line) between Tver and Novopetrovskoye is approximately 64 miles respectively 102 kilometers.
By car or train, the actual journey to Novopetrovskoye is certainly longer, as only the direct route (as the crow flies) between Tver and Novopetrovskoye has been calculated here.
Air line (approximately)
102 kilometers
55 nautical miles