Jean Marcley will be walking with her dog Sarah -- 20 miles a day, for three days.

"My oldest daughter said: 'Mom, you're doing that? I want you to go on Oprah!' " says Jean Marcley.

On Oprah Winfrey? Just for walking? There's gotta be more to it.

And there is: The 59-year-old breast cancer survivor is blind.

She started going blind: "When I was about 10 years old," Marcley says.

It's why Sarah will guide Jean on that 3-day fundraising walk through Issaquah, Redmond, Shoreline, and finally to Seattle's Magnuson Park.

Dee VanBrocklin will be walking with Jean and Sarah too.

Dee will be Jean's eyes.

"Yes I am," says VanBrocklin. "And it makes me more aware of my surrounding as well."

They are a team, these three. They call themselves: "Four Left Feet" for obvious reasons:

"It's two people's left feet, and Sarah's two left feet," says Jean.

This is Jean and Sarah's first walk for cancer research. They promise it won't be their last.

The 12 city walk, called "Breast Cancer 3-Day", benefits the Susan G. Komen Breast Cancer Foundation.

For more information go to www.the3day.org.