In 2014, Korir competed in two international competitions, the 2014 Asian Games and the 2014 IAAF World Half Marathon Championships.

At the Asian Games Korir competed in the 10,000 meters, coming third in a time of 28:45.65.

[4] At the World Half Marathon Championships Korir performed the best on the Bahraini team coming 23 in a personal best time of 1:01:40.

This time was only 16 seconds off the national record set in 2006 by Abdelhak Zakaria.

In 2016, Korir took part in the 2016 Summer Olympics, competing in the marathon event.