Isobel Batt-Doyle (athletics) made her Commonwealth Games debut in Birmingham in 2022 where she placed 8th in both the women’s 5000m and 10,000m. Less than two months later, she stepped up to finish second in the Melbourne Marathon in 2:28:10, the fastest Australian woman on debut.

“Izzi” was born into a family of runners – both parents were avid marathon runners – and started Little Athletics aged 8 at the Flinders Athletics Club. Within a year, she tackled Adelaide’s City-Bay Fun Run, holding her stepfather’s hand the entire way. After graduating from Seymour College in 2013, Izzi spent five years in the USA competing as a student/athlete at St John’s University in New York and the University of Washington where she earned a Bachelor of Arts with honours in psychology.

She made her Olympic debut in Tokyo in 2021, finishing 28th overall in the 5000m. Although she met the marathon qualifying standard for the Paris 2024 Olympics, she missed selection. However, she competed in the 5000m for the second time where she was ranked 18th overall. In February 2025, she shattered Kerryn McCann’s Australian half marathon record set in 2000, clocking 67 minutes 17 seconds in Japan.

Isobel is a Masters/PhD candidate in clinical psychology at Flinders University where she is undertaking research into eating disorders. She and her partner/coach Riley Cocks established RunAsOne in 2020, a coaching business working with over 400 runners.