ORLANDO -

Downtown Orlando was filled with thousands of people Saturday morning, all walking together for one cause: The fight to end breast cancer.

The American Cancer Society Making Strides Against Breast Cancer walk is the 15th annual walk for the foundation.

The event closed all the main streets of downtown Orlando for hours while the walkers took to the 5K route around Lake Eola.

The event last year brought 45,000 participants, Orlando police said they expect more this year.