The calculated distance (air line) between Rechka-Vydrino and Irkutsk is approximately 61 miles respectively 98 kilometers.
By car or train, the actual journey to Irkutsk is certainly longer, as only the direct route (as the crow flies) between Rechka-Vydrino and Irkutsk has been calculated here.
Air line (approximately)
98 kilometers
53 nautical miles