In May, Bisset was selected for her first national team, representing Australia at the World Relays. She and Josh Ralph placed second in the first-ever mixed 2 × 2 × 400 m relay. Bisset went on to win the 800 m at both the Oceania Championships and Summer Universiade. She made her Diamond League debut at the Anniversary Games in London in July, where she placed second behind Lynsey Sharp. Her time of 1:58.78 set a new Australian record, surpassing the 43-year-old record set by Charlene Rendina, and qualifying Bisset for the 2020 Tokyo Olympics. Two months later, she competed at the Doha World Championships in Qatar, but was hampered by injury and did not progress beyond the heats.
