Date of Birth: 
Place of Birth: Antakya, Turkey
About Nilay Esen Ersun
- Nilay Esen Ersun (born January 3, 1987) is a Turkish female long-distance runner specialized in marathon.
- She is a member of Bursa Büyülsehir Belediye SK.In 2005, she received a two-year ban from the track due to positive testing for illegal substance Metenolone.She took part at the 2015 Hamburg Marathon in Germany, and finished in 2:37:09, meeting the qualifying time standard for Olympics.
- So, she earned a quota spot for women's marathon in the 2016 Summer Olympics.
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