The calculated distance (air line) between Pervomayskoye and Novosibirsk is approximately 101 miles respectively 163 kilometers.
By car or train, the actual journey to Novosibirsk is certainly longer, as only the direct route (as the crow flies) between Pervomayskoye and Novosibirsk has been calculated here.
Air line (approximately)
163 kilometers
88 nautical miles