She claimed victory at the 2011 Parelloop 10K in April. Running at the 2011 London Marathon, she could not keep pace with the race leaders and ended the race in seventh while Mary Keitany won the race with a time equal to Mikitenko's best. Her season went well from there on, however: she won the Avon Frauenlauf and Berlin 10K races and was runner-up to Florence Kiplagat at the 2011 Berlin Marathon in a time of 2:22:18 hours. She had two marathon outings in 2012. Her fastest was a run of 2:24:53 for seventh at the 2012 London Marathon, making her the fastest European in the race. She returned to the city later that August to compete in the 2012 Olympic marathon, where she placed 14th overall.