Rubuta ci gaba don wannan sakin layi - Courtney ta sami ci gaba sosai ga mafi kyawunta na mita 800 da 1500 a cikin 2013 kuma ta lashe wasan na biyu a Gasar BUCS a cikin gida da waje a waccan shekarar. A cikin kakar wasan cikin gida ta 2014 ta lashe taken cikin gida na Welsh kuma ta kasance ta uku a Gasar Wasannin Wasannin Wasannin Wasannin Burtaniya ta 2014. A kakar 2015 ta ga ta sauke ta 800 m da 1500 m mafi kyau ga 2:05.48 da 4:09.74 minti kuma ta yi ta kasa da kasa farko a 2015 Turai Athletics U23 Championships
, yana matsayi na goma a tseren mita 1500. Ko da yake ta sanya ta bakwai a kasa a gasar zakarun Burtaniya ta 2016, ta gudu mafi kyau na minti 4:07.55 kuma ta sami zaɓi don gasar zakarun Turai ta 2016, tana gasa a zagaye na farko kawai. Ta haɗu tare da Cameron Boyek, Sarah McDonald, da Tom Marshall don ɗaukar lambar zinare a wasan farko na haɗakarwa a gasar zakarun Turai ta 2017.