Ku qor sii socodka faqradan - 1952-kii, Kavanagh wuxuu noqday Australiyaankii ugu horreeyay ee ku guuleysta mootada Grand Prix markii uu ku guuleystay 350cc Ulster Grand Prix. Sannadkii 1956, wuxuu ku guuleystay tartanka Junior TT ee tartanka Isle of Man TT. Kavanagh wuxuu galay laba Formula One Grand Prix sanadkii 1958 isaga oo wata Maserati 250F, marka hore Monaco halkaas oo uu ku guuldareystay inuu u qalmo, iyo ugu dambeyntii Belgian Grand Prix
halkaas oo uu ku seegay tartanka kadib markii uu burburiyay mashiinkiisa tababarka, kadib markii uu kaalinta 20aad ka galay 28 tartame.