Meet Zack Blackburn: Zack is the Director of the Boston Marathon Jimmy Fund Walk. This walk is the largest participatory event that the Jimmy Fund sponsors and is the biggest charity walk in the United States from a fundraising standpoint. The event annually raises about 8 million dollars each year and approximately 8500 people participate in it. Zack will talk about how the participants walk 26.2, 13.1, 6.2., or 3.1 miles from either Hopkinton, Wellesley, Newton, or the Dana Farber to Copley Square, where this great celebration continues