The calculated distance (air line) between Khabarovsk and Solnechnyy is approximately 169 miles respectively 273 kilometers.
By car or train, the actual journey to Solnechnyy is certainly longer, as only the direct route (as the crow flies) between Khabarovsk and Solnechnyy has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles