The South Maclean-based Brennan thinks Rannoch will eventually win races over 457 metres and potentially beyond.
“Rannoch, she's won her races over on the Q1 and now at the Q Straight,” the trainer said.
“So, she's a fourth grade now. It's going to be a little bit hard to place. But, the plan will be the 390 metre fourth grade race on Friday with the view then to build her up to 457 metres.
“She'll get into fifth grade. So, we will just take it week by week with Rannoch.”
Rannoch has had two cracks at 457 metre racing at Q1 Lakeside, but she did not place in either event.