The calculated distance (air line) between Līvāni and Daugavgrīva is approximately 94 miles respectively 151 kilometers.
By car or train, the actual journey to Daugavgrīva is certainly longer, as only the direct route (as the crow flies) between Līvāni and Daugavgrīva has been calculated here.
Air line (approximately)
151 kilometers
82 nautical miles