Curlers in Dumfries will find out today if they have entered the record books.
They started their gruelling challenge at 10 am on Thursday and are aiming to play continuously for 72 hours. They'll pass that mark at 7pm tonight (Saturday 3rd March).
The record is currently 57 hours and 44 seconds.
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The gruelling contest has been announced early, to give competitors plenty of time to prepare.
It was created by Annirose Ansbro, and marks the build up to Scotland's premier arts festival in May.
It's been produced by Carlisle MENCAP, and is being funded by the cabinet office.