 He has twice represented Uganda at both the World Championships in Athletics (2009, 2011) and the IAAF World Cross Country Championships (2006, 2008)

Ayeko made his breakthrough at the 2007 Summer Universiade where he was a minor medallist in both the 5000 metres and the 10,000 metres.He also made the final of the steeplechase at that event.He was a student at the Kampala International University.