The calculated distance (air line) between Švenčionys and Kėdainiai is approximately 87 miles respectively 140 kilometers.
By car or train, the actual journey to Kėdainiai is certainly longer, as only the direct route (as the crow flies) between Švenčionys and Kėdainiai has been calculated here.
Air line (approximately)
140 kilometers
75 nautical miles