Rubuta ci gaba ga wannan sakin layi - Parkes ya fara shiga gasar cin kofin duniya a Aintree
a shekarar 1959 yana tuka motar Formula 2 (F2) Fry-Climax 1.5-litre madaidaiciya-4. Duk da haka bai cancanci ba kuma ya koma wasanni na wasanni bayan haka, ban da fita guda daya a Mallory Park a 1962 tare da Bowmaker Cooper. Bayan nasarar da ya samu tare da motocin motsa jiki na Ferrari, Parkes ya shiga Ferrari a hukumance, a 1963 a matsayin mai horarwa da mai ba da gudummawa, kuma a cikin lokutan da suka biyo baya ya zama sananne a matsayin babban direban motar motsa jiki. Lokacin da John Surtees ba zato ba tsammani ya bar Ferrari a shekarar 1966, an inganta Parkes zuwa kungiyar Grand Prix kuma tare da fadada shasi don saukar da tsayinsa na ƙafa shida da inci huɗu, ya yi nasara nan da nan, ya gama a matsayi na biyu a 1966 Grand Prix na Faransa a Reims. Jack Brabham ya lashe tseren tare da abokin aikinsa, Denny Hulme, na uku, a cikin Brabham <unk> Repcos. Duk da haka wannan ya biyo bayan ritaya biyu kafin wani wuri na biyu a Monza inda ya kuma dauki matsayi na farko. Parkes ya lashe tseren Formula One na kasa da kasa a Silverstone da kashi ɗaya bisa uku na zagaye a kan Brabham a watan Afrilu 1967. Gasar zagaye na 52 ita ce gasar Formula One ta farko ga Parkes a ƙasarsa ta asali. Ya kammala gasar mil 152.36 a cikin 1: 19:39.25 tare da matsakaicin saurin 114.65 mph.