Rubuta ci gaba don wannan sakin layi - Lemaitre, bayan ya tuntubi kocinsa, ya zaɓi kada ya yi gasa a tseren mita 100 a wasannin Olympics na London na 2012. Lemaitre zai shiga ne kawai a cikin mita 200, wanda ya kasance na huɗu a wannan shekara, da kuma 4 × 100 m relay. Kocinsa, Pierre Carraz, ya ce: "A cikin sakamakon sama da mita 100, Christophe yana matsayi na 10 ne kawai tsakanin waɗanda suka shiga. Fiye da mita 200, za mu iya fatan samun lambar yabo. " Lemaitre ya gama na shida a wasan karshe na mita 200 a cikin lokaci na 20.19 s. Bayan wasan karshe, ya ce, "Na fara sosai. Kuma har yanzu ina da wannan matsala a karkata. Na yi iya ƙoƙarina, amma yana da wuya sosai. Na gama na shida. Babu wani abu da za a ce. A gare ni, ba ƙarshen da nake fata ba ne. " A cikin 4 × 100 m relay karshe
A shekara ta 2008, Lemaitre ya lashe lambar yabo ta farko ta Olympics, tare da tawagarsa ta dauki tagulla a bayan Jamaica (zinariya) da Trinidad da Tobago (azurfa).