The calculated distance (air line) between Przasnysz and Śródmieście is approximately 55 miles respectively 88 kilometers.
By car or train, the actual journey to Śródmieście is certainly longer, as only the direct route (as the crow flies) between Przasnysz and Śródmieście has been calculated here.
Air line (approximately)
88 kilometers
48 nautical miles