Kammala jumla mai zuwa: A Wasannin Olympics na 2012, Felix ya yi gasa a cikin wasanni huɗu: mita 100, mita 200, 4 × 100 mita, da kuma 4 × 400 mita, ya sanya na biyar a cikin mita 100 kuma ya lashe zinare a cikin sauran uku, don haka ya zama mace ta farko ta Amurka da ta lashe zinare uku a wasan motsa jiki a gasar Olympics tun lokacin da Florence Griffith-Joyner a gasar Olympics ta 1988. A wasan karshe na farko,
A tseren mita 100 na karshe, ta zama ta biyar tare da mafi kyawun lokaci na 10.89 seconds. Wasannin karshe na mita 200, tseren da ta rasa sau biyu a wasannin Olympics na bazara na 2004 da 2008 zuwa abokin hamayyar Jamaica, Veronica Campbell-Brown, ya tabbatar da cewa ita ce ƙoƙari na uku da ta yi nasara yayin da ta ci nasara a cikin sakan 21.88, ta wuce filin da aka tara wanda ya hada da Campbell-Brown, 2012 Olympic 100 mita zinare Shelly-Ann Fraser-Pryce, 2012 Olympic 100 mita zinare Carmelita Jeter, da 2012 Olympic 400 mita zinare Sanya Richards-Ross. Felix ya tashi daga cikin gidaje tare da farawa mai ban mamaki kuma ya kasance daidai da 'yan wasan Jamaica da ke fitowa daga karkace kafin ya janye a cikin mita 50 na karshe don tabbatar da lambar zinare ta Olympics da aka daɗe ana jira. Shelly-Ann Fraser-Pryce ta lashe lambar azurfa kuma 'yar kasar Amurka Carmelita Jeter ta dauki lambar tagulla.