The i98FM Illawarra Convoy is on track to raise $15 million in 15 years, according to organisers.
Sunday's Convoy featured 751 trucks and 937 bikes raising funds for the Illawarra Community Foundation.
Convoy manager Mark Rigby said the total raised at this year's event will be revealed on Wednesday.
The Convoy departed under police escort from the Illawarra Coal's West Cliff Colliery on Appin Road about 8am.
The family fun day at Shellharbour Airport featured live performances from Australian rock legends Hoodoo Gurus, pop favourites/reality TV stars The Veronicas and more.
"There was a little bit of light drizzle, but nothing to dampen anyone's spirits," Mr Rigby said of the fun day.
The Illawarra Community Foundation distributes funds to local charities and families who are facing life-threatening illness, as well as supporting local hospitals with vital medical equipment and upgrades.