At the 2005 World Youth Championships in Athletics she was again outdone by Nyaruai, but defeated the rest of the field to win the silver medal over 3000 metres. The 2006 IAAF World Cross Country Championships saw Korikwiang defeat her rival to claim her first world junior title. There was a reversal of the positions at that year's 2006 World Junior Championships in Athletics, where Korikwiang was the 5000 metres silver medallist behind her rival. She was named as the most promising sportswoman at the end-of-year SOYA Awards.