The calculated distance (air line) between Pärnu and Kohtla-Järve is approximately 121 miles respectively 195 kilometers.
By car or train, the actual journey to Kohtla-Järve is certainly longer, as only the direct route (as the crow flies) between Pärnu and Kohtla-Järve has been calculated here.
Air line (approximately)
195 kilometers
105 nautical miles