Nimali Liyanarachchi of Sri Lanka Air Force clocked 4:15.89 seconds to shatter a seven year old Sri Lanka record in the 1500 metres event on the opening day of the 97th National Athletics Championship worked off at Sugathadasa Stadium yesterday. She broke the record set up by Champika Dilrukshi in 2012. GTA Abeyratne(4:22.24) of Navy and KHMNA Kumari of Air Force (4:49.77) took second and third places respectively.