Rengeruk waxay guusheedii ugu horreysay ku guuleysatay 2013, iyada oo ku guuleysatay tartanka dhalinyarada Kenya ka hor inta aysan garaacin Berhan Demiesa ee Itoobiya si ay u qaadato magaca 3000 mitir ee 2013 World Youth Championships in Athletics. Sannadkii xigay waxay kaalinta shanaad ka gashay tartankii dhalinyarada ee tartankii Afrika ee waddanka.
, qeybinta dahabka kooxda. Waxay ku guuleysatay tartankii da'yarta ee Kenya iyadoo ku guuleysatay 3000 m oo ugu fiican 8:53.41 daqiiqo markii ay ku soo bilawday IAAF Diamond League ee Doha. Horyaalkii Adduunka ee Ciyaaraha fudud ee 2014 ee Ciyaaraha fudud, si kastaba ha noqotee, waxaa ka adkaatay ciyaartooyda reer Mareykan ah ee Mary Cain, iyadoo ka tagtay Rengeruk oo leh billad qalin ah.