Upon her return to competition she began focusing on road running events. The change up to the marathon brought the greatest success of her career. A run of 2:19:19 hours to win the Berlin Marathon made her the fourth fastest woman ever at that point. Her win in London the year after in 2:22:11 hours was the fastest that year. With consistent marathon performances, she secured three consecutive World Marathon Majors title in both the 2007–08, 2008–09, and 2009–10 seasons. She entered her first Olympic marathon in 2012 and came fourteenth.