Each year NSW Road Racing Club runs a 6 Hour Regularity Relay. For 2021 it is at Sydney Motorsport Park Gardner (GP) Circuit and is a Day / Night event finishing under lights. Look at the NSWRRC website and register there.
I suggest that you take a look at this event, form many BMW Club teams and enter. Early bird pricing is available until 25 Feb so discuss form that team and enter. Your team can be from 3 to 6 cars and it is a terrific motorsport, work together as a team, happening.
To make this a bit interesting we want to see BMW teams enter and do well so there are points in our Supersprint Competition up for grabs. Members of our best team each receive 10Supersprint points. Second best team gets 8 points. Third best team 6 points etc.
Register your team on the NSWRRC website and let us know that you have registered a team by having each team member register here and include the team name in the "Please specify the full names of your accompanying guests (apart from your partner)" box on our registration. No cost or payment to us.