Queensland racked up an astonishing 900-6 before declaring against Victoria in the Pura Cup final in Brisbane.
Maher celebrates his double-ton
Jimmy Maher batted for more than eight hours to hit 223 while Shane Watson retired on 201. There were also tons for Martin Love and Clinton Perren.
The Bulls were replying to Victoria's 344 and are certain to win now.
Just one day remains, but in the event of a draw the title - Australia's premier domestic prize - goes to the host team, which is Queensland.
They finished ahead of the Bushrangers after the league stage of the competition.
The Bulls were actually 878-3 at one point, before a late flurry of wickets from left-arm seamer Dirk Nannes.
The total of 900 was the 11th best in first-class cricket, and smashed the Queensland record.
Two Victoria sides went past the 1,000 mark in the 1920s - with the top mark the 1,107 made in Melbourne in 1926-27.