Cameron will be taking on the 10km run along the Mooloolaba foreshore while youngest Matt will tackle the 40km bike ride and Mark will compete in the 1500m swim.
Cameron Herbert said while there’s a rivalry between him and his brothers, they’re in it to beat the other firefighting teams.
“We’re not taking it super seriously but it’s good that we’ve all come together, they both work in Brisbane so we don’t get together too often as the three of us,” Mr Hebert said.
“It’ll be a nice way to spend the day and have something to talk about afterwards.