At the Asian Games in Bangkok in 1966, he won the bronze medal in both 5000 metres and 10,000 metres. His personal best performance in the 10,000 metres, 29:18.0 minutes, still stands as the Sri Lankan national record since 1975. Born in Kandy, Rosa started his athletic career at Roman Catholic School, Ampitiya. Later he joined the Army and continued to pursue athletics. He led the Sri Lankan team in the 1972 Olympics but could not compete in the 1976 edition due to Sri Lanka boycotting the Montreal Olympics.[1][3] He was in Ceylon Olympic squad in 1968 but country sent only a three-man team, which did not include Lucian, to Mexico due to financial difficulties.[4]
Rosa is a University of Wisconsin–Parkside Hall of Famer, and a men's cross-country and track coach from 1977-2007.[5][6] Lucian Rosa Invitational is named after him.[5]