Kammala wannan jumla: A shirye-shiryen gasar duniya, ta gudu a Almond Blossom Cross Country a watan Maris na 2011 kuma ta dauki matsayi na biyu. Ta gudanar da matsayi na 16 a
2011 Gasar Cin Kofin Duniya ta IAAF a Punta Umbría. Ta yi tsere mafi kyau na minti 15:31.26 don mita 5000 a wasannin FBK a watan Yuni sannan ta yi tsere mafi kyau na minti 9:37.60 a Adidas Grand Prix a New York. Britton ya wakilci Ireland a kan hanyar a gasar zakarun duniya ta 2011, inda aka fitar da shi a mataki na farko na tseren tsere. A watan Nuwamba ta zo ta uku a tseren tseren Cross de l'Acier.