He competed collegiately for the Virginia Tech Hokies, where in 2018 he anchored the men's distance medley relay team to an NCAA championship title.

[4] In 2019, Gourley reached the final of his specialist event in front of the home crowd at the European Indoor Championships in Glasgow but was unable to compete in it due an illness.

Gourley's success secured him also overall 1500 m World Indoor Tour victory, after his mile win in Boston, MA and runner-up mile finish in New York, NY (with a European indoor record over the distance) earlier that month.

[6][7] In March, he claimed the silver medal in his signature event at the European Indoor Championships in Istanbul behind only Jakob Ingebrigtsen, 3:34.23 to 3:33.95.

[9] After winning the 1500 metres gold medal at the 2024 British Athletics Championships, Gourley was subsequently named in the Great Britain team for the 2024 Summer Olympics[10] where he finished 10th in the final.