Kitty Cohen is an energetic centenarian who, for the seventh year, laced up her shoes to walk 30 kilometres in a single day to help raise money for cancer research.

Cohen walked alongside her daughter and granddaughter for a full 30 kilometres Saturday as part of Toronto’s Weekend to End Women’s Cancers. She was one of 3,100 people involved in this year’s walk – and the oldest person taking part.

"Let us eradicate cancer in my lifetime," she told CTV News Channel Monday. "That is my fervent wish and that's why I'm here…This old lady is fighting for cancer eradication."

Despite taking thousands of steps Saturday, Cohen says she is already fully recovered.

"I was pooped yesterday," she said. "(But now) I'm back to where I always want to be – capable of manoeuvring and able to dance."

The annual two-day Shoppers Drug Mart Weekend to End Women's Cancers raised more than $7.7 million for the Princess Margaret Cancer Centre this year. Participants can choose to walk either one day or both, trekking a distance of either 30 or 60 kilometres through Canada’s largest city.

Over the past 12 years, the Toronto event has raised more than $148 million.

Cohen has walked more than 220 kilometres over her past seven years, and said doing such a lengthy walk is all a state of mind that comes down to just thinking you can.

To say Cohen is energetic would be an understatement. She stays in shape by dancing a lot – everything from square dancing to line dancing and ballroom dancing.

The former legal secretary also walks every day, plays Scrabble and, in May, became the oldest Canadian to throw out a first pitch at a Toronto Blue Jays game. Naturally, she jogged up to the mound before the pitch.

"You don't want to let that brain go idle because idleness is the workshop of the devil and the devil's name is Alzheimer's," she said.

One in seven women will be diagnosed with breast or gynaecologic cancer in their lifetime. On average, 437 Canadian women will be diagnosed with breast cancer every week and 104 women will die from it.

But there are many different kinds of cancer, and next year, the walk will be geared toward raising money for all of them.

"People don't choose the cancer they get, it chooses them and we really wanted to be representative if the entire community," Princess Margaret Cancer Foundation vice-president Christine Lasky told CTV News Channel.

As for Cohen, she plans to keep on dancing and walking to get ready for next year's walk.