The calculated distance (air line) between Ķekava and Daugavgrīva is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Daugavgrīva is certainly longer, as only the direct route (as the crow flies) between Ķekava and Daugavgrīva has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles