Kammala jumla mai zuwa: Courtney ta yi babban ci gaba ga mafi kyawunta na mita 800 da 1500 a 2013 kuma ta lashe wasan karshe a gasar BUCS a cikin gida da waje a wannan 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 bests zuwa 2:05.48 da 4:09.74 minti kuma ta yi ta kasa da kasa halarta a 2015 Turai Athletics U23 gasar zakarun Turai, placing goma a 1500 m. 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 cikin wasan farko na haɗuwa da haɗuwa a gasar
Gasar Zakarun Turai ta 2017.