Tulis hiji continuation for this paragraph - Pindah ka jajaran senior, di 2006 Dunya Cross Nagara Championships
manéhna réngsé ka dua belas dina lomba panjang, nulungan Kenyans ka medali pérak dina kompetisi tim. Manéhna jadi nu kalima dina steeplechase di 2007 All-Afrika Games jeung 2008 Afrika Championships di athletics. Njoroge meunang medali pérak dina steeplechase di tukangeun Milcah Chemos Cheywa di 2010 Commonwealth Games di New Delhi.