When the boys aren't around, the girls put on one of the best cancer fundraisers in Canada.
Saturday's annual Dirty Girls Mudrun will add to over $500,000 the event has raised for the Canadian Cancer Society since 2013.
"It's just a fun day for the ladies," said event organizer Sharla Brown. "They get their best gal pals together and they come out and they have a really fun day for a really good cause."
Six hundred women navigated through the five-kilometre obstacle course, which included a commercial waterslide into the Kaministiquia River and a "lilly pad hop," involving running across foam mats in the river. The finale was a belly crawl through the mud.
The children's event premiered at Conquer the Fort on an equally hot day in July was replicated, known as mud princesses.
Brown said it's a different kind of race when the women have the spotlight all to themselves.
"It just has a different energy to it," she said. "It's a different dynamic, for sure. You can tell by the costumes the girls are wearing today. They put a lot of work kinto the costumes, into their team names. It's just a whole lot of fun."