how long does the grand final go for

The AFL Grand Final typically lasts around 2.5 hours including breaks. The game consists of four quarters, each 20 minutes of playing time plus stoppages, and includes quarter-time breaks and a 20-minute halftime. The event starts in the afternoon and generally finishes around 5pm local time, although the total time for the official match play is about 2 hours of actual game time plus breaks. Extra time is played if the match is drawn, but this has not been required in recent years.