The calculated distance (air line) between Dreiliņi and Daugavgrīva is approximately 10 miles respectively 17 kilometers.
By car or train, the actual journey to Daugavgrīva is certainly longer, as only the direct route (as the crow flies) between Dreiliņi and Daugavgrīva has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles