Nelly Jepkosgei is married to Cornelius Kiprotich Korir, They are blessed with two kids.She originally competed for Kenya, running at the
2010 World Junior Championships in Athletics and the
2011 All-Africa Games, but now competes for
Bahrain. A dispute between the national bodies resulted in Jepkosgei being ineligible to run for Bahrain until March 2021, and she failed to represent her nation of birth at the
2019 African Games, despite being selected. She holds personal bests of 1:58.96 minutes for the 800 m and 4:00.99 minutes for the
1500 metres. She also holds the
Kenyan national record for the
1000 metres with her time of 2:35.30 minutes. She has won three times on the
IAAF Diamond League circuit, taking wins at the
Memorial Van Damme in 2013, and
Athletissima and the
Meeting International Mohammed VI d'Athlétisme de Rabat in 2019. ==Doping violation and ban==