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Ann Romney will literally be taking large strides toward defeating breast cancer on Saturday morning, when she'll walk in the American Cancer Society's Making Strides Against Breast Cancer 5k in Orlando, Fla.

A representative of the American Cancer Society has confirmed to ABC News that Mrs. Romney is registered to participate in the walk. (Husband Mitt is not expected to walk alongside her.) She will join fellow survivors and the community at Lake Eola Park. Romney herself has battled with breast cancer; she was diagnosed with the illness in January 2009.

"I had ductal carcinoma, which is DCIS," Romney said in an interview with America's Radio News. "Stage zero, which meant, for me, I had surgery, and I had radiation, but I did not have to do chemo because it was a stage zero. So again, it was early diagnosis that prevented me from having to have chemotherapy."

Ann Romney, who has had a long family history with the disease, says that cancer is a "serious business."

"I lost my mother from ovarian cancer, I lost my grandmother from ovarian cancer, I lost my great-grandmother from breast cancer, so for me, you know, it's been a long line of cancer," Romney admitted. "Women that have dealt with cancer in their lives, and I unfortunately saw my grandmother die from ovarian and I took care [of] and loved my mother in her death, with her battle with ovarian cancer. So cancer is a serious business."

October is Breast Cancer Awareness Month, and Mrs. Romney was seen just last week supporting the cause by wearing a bright pink Oscar de la Renta dress to the second presidential debate. A spokeswoman for Mrs. Romney said she "has been very involved with breast cancer awareness this month by visiting hospitals and meeting with patients and survivors. She's worn lots of pink as a result!"

See Ann Romney's Campaign Looks HERE