An Australian rower who set out to rack up some kilometers while on COVID-19 lockdown inadvertently broke a world record for the indoor rowing half-marathon, officials said Wednesday.

Like the rest of the Australian team, Georgie Rowe was training at home in Sydney by herself last weekend as she deals with the disappointment of not travelling to Japan this year for the Tokyo Olympics.

Rowe, 27, was on a Concept2 rowing machine and such was her intensity that she clocked a time of 1 hour, 19 minutes and 28.4 seconds over a distance of 21,097 meters.

It smashed the record for the heavyweight women's half-marathon set five years ago by US rower Esther Lofgren by more than 40 seconds.

Rowing Australia spokeswoman Lucy Benjamin said it was an extraordinary effort in the circumstances, particularly as Rowe normally works as 

part of a team in the women's eight.

Rowe told the Australian Broadcasting Corporation that her approach was to plug the distance into the machine then "put some music on and just go for it."

When Rowe realized a record was in the offing she admitted to some confusion about exactly how far she needed to row, 21,097 meters or 21,097.5.

To be certain, she completed 21,098, leading to a minor delay in Concept2 recognizing her achievement.

But the time is now listed on the manufacturer's website and Rowe will no doubt be hoping for greater glory when she eventually competes at the rescheduled Tokyo Games next year.