By CBS3 Staff

PHILADELPHIA (CBS) — Some 10,000 people took part in the Walk to End Alzheimer’s on Sunday morning. The walk kicked off at Citizens Bank Park in South Philadelphia.

Organizers say it’s the largest walk in the country to fight Alzheimer’s disease.

Gwynne Johnson volunteered at Sunday’s event to remember her father, who died from the disease.

“This is huge. There are so, so many people that are impacted by this. My first walk was in 2008 here at Citizens Bank Park. I cried the whole day because it was new to me but the magnitude of people who are impacted by this disease is astonishing,” Johnson said.

Organizers say Alzheimer’s disease kills more people than breast cancer and prostate cancer combined.

Proceeds from Sunday’s event will go toward research, care and support.