Yuko Sato shatters Australian and Japanese backyard ultra distance records

Yuko Sato, originally from Japan and now residing in Adelaide, entered the Clint Eastwood Last One Standing backyard ultra held at Oxley Creek Common in Rocklea, Queensland. The event requires participants to run a 6.71-kilometre circuit each hour, using any remaining time for recovery before starting again. Over 65 continuous hours, Sato amassed 436 kilometres, breaking the previous Australian and Japanese female distance records for the discipline.

She recounted moments of hallucination, severe foot swelling, and total sleep deprivation during the effort. Sato traced her entry into ultrarunning to a 2019 breakup that led her from road running to trail and then ultra events. While she views the sport as a competition, she highlighted the supportive atmosphere where runners help each other push beyond perceived limits. The performance underscores both the extreme physical demands of backyard ultras and the camaraderie that sustains participants.