Joasia Zakrzewski

Joanna Lynn Zakrzewski (known as Joasia or Jo, born 1976) is an ultrarunner from Dumfries, Scotland.

Running career
Zakrzewski is a medical doctor, and had been a race doctor and expedition medical officer before taking up ultrarunning. She has been diagnosed with relative energy deficiency in sport (RED-S).

In 2016, she was the first woman to win the 53.5 mi Race to the King along the South Downs Way.

In a race in Sydney in July 2020, she set three Scottish records: distance run in 12 hours and 24 hours, and time for 100 miles, and broke the British record for 200km.

In February 2023, Zakrzewski set a world record of 255.7 mi for a distance run in 48 hours, although this was beaten the following month when Camille Herron ran 435.336 km in the time.

Cheating incident
Zakrzewski was stripped of her third position in the GB Ultras race in 2023 when it emerged that she took a car ride for a part of the race. She categorized herself as an "idiot" for accepting the award and blamed it on miscommunication as she claimed that she originally intended to withdraw from the race and hence took a car ride. However, the race director, Dwayne Drinkwater, rejected these claims noting that "After the event, there was no attempt by Joasia to make us aware of what had happened and to give us an opportunity to correct the results or return the third place trophy during the course of the subsequent seven days."

Zakrzewski received a one-year ban for the incident in November 2023.

Personal life
Zakrzewski qualified in medicine at the University of Cambridge ( MB BChir 1999). She works as a general practitioner in Woy Woy, New South Wales, Australia.