In 2009, an injury prevented him from competing for six 6 months, but he resolved the problem by working in the gym, together with a limited amount of running. He also improved his running posture and began the 2010 season with a view to competing in a marathon in spring. After his debut in the Prague Marathon (where he ran a time of 2:09:09 hours) and a win at the Paris Half Marathon, Kiprop turned to at the 10,000 m. His victory over the distance at the Kenyan Championships was unexpected, and his time (27:26.93) bettered the world best performance at altitude by almost 18 seconds. After that performance, Wilson was selected for the African Championships in Nairobi, where he won in the 10,000 m gold medal, beating Moses Ndiema Kipsiro.