Korikwiang was born in
Kaptabuk and drew inspiration to become a
runner from another local resident
Tegla Loroupe, who broke
world records in the
half marathon. She began competed at the national junior level in 2003 and gained selection for the
African Junior Athletics Championships that year, where she came fifth in the
5000 metres. A runner-up performance behind
Veronica Nyaruai at the national junior cross country championships two years later led to her first world appearance, where she was seventh in the junior race at the
2005 IAAF World Cross Country Championships. 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. 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. The following year she won the Kenyan junior cross title and assumed the lead in the global event at the
2007 IAAF World Cross Country Championships in
Mombasa. However, an error with the final lap bell meant Korikwiang mistakenly treated the second to last lap as the ultimate one. Her premature efforts destroyed her chance at the title as she let others pass in the belief the race had ended and, after realising her mistake, she eventually dropped out having fainted mid-race in Mombasa's torrid conditions. In her final international junior competition she won the 5000 m
bronze medal at the
2007 African Junior Athletics Championships. A fifth-place finish at the
Kenyan trials earned her a spot for the senior world team, but she was dismissed from the team after coaches stated that she had not maintained her fitness in the buildup to the event. She failed to make the track team for the
2008 Summer Olympics later that summer. Korikwiang missed out on both the
2009 World Championships in Athletics and the
2010 IAAF World Cross Country Championships and decided to switch to a new event, the
10,000 metres, instead. The move paid off as she took second place to
Meselech Melkamu in her debut at the
Golden Spike Ostrava, setting a personal best of 31:06.29 minutes. A runner-up performance behind reigning world champion
Linet Masai at the Kenyan championships led to an appearance at the
2010 African Championships in Athletics (where she was sixth in the event). Her focus returned to cross country in 2011, as she won at the
Cross Zornotza, came third at the
Cross Internacional de Itálica, and then gained selection at the national championships. She came seventh at the
2011 IAAF World Cross Country Championships and was part of the winning Kenyan women's team. She travelled to the United States the following month and was edged into second at the
Carlsbad 5000 by
Aheza Kiros. She competed on the
2011 IAAF Diamond League circuit and set a 5000 m best of 14:41.28 minutes in
Shanghai. Having finished fourth at the national trials, she did not gain selection for the World Championships that year, but instead competed at the
2011 All-Africa Games in
Maputo, where she won bronze medals over both 5000 m and 10,000 m. She was third at the
Elgoibar Cross Country,
Trofeo Alasport and
Carlsbad 5000 races at the start of 2012. She skipped the rest of the season after failing to make the Kenyan Olympic team and only returned in the 2015 season. She won gold at the
Military World Games, taking the 5000 m gold medal with a time of 15:23.85 minutes. She was runner-up at the Nairobi Half Marathon later that month but again competed infrequently, with the next highlight being a win at the
Eldoret Half Marathon at the end of 2017. ==Competition record==