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