Joasia Zakrzewski

Joanna Lynn Zakrzewski, known as Joasia or Jo, is an ultrarunner from Dumfries, Scotland, born in 1976. She is a medical doctor who qualified at the University of Cambridge in 1999 and works as a general practitioner in Woy Woy, New South Wales, Australia; before taking up ultrarunning she had been a race doctor and expedition medical officer. In 2016 she became the first woman to win the 86.1 kilometre Race to the King along the South Downs Way. In a race in Sydney in July 2020 she set three Scottish records, for distance run in 12 hours and in 24 hours and for time over 100 miles, and broke the British record for 200 kilometres. In February 2023 she set a world record of 411.5 kilometres for distance run in 48 hours, which Camille Herron beat the following month. She received a one-year ban in November 2023 after being stripped of third place at the 2023 GB Ultras race for taking a car ride during part of it.