Thomas S. Grilk, Chief Executive Officer | Boston Athletic Association | Boston Marathon Tom Grilk is the Chief Executive Officer of the Boston Athletic Association | Boston Marathon, taking on that role in January of 2011. He served as President of the B.A.A. Board of Governors from 2003 until 2011. In addition to his duties as Chief Executive Officer, he served as the marathon's finish line announcer from 1979 through 2013, and he is a former marathon competitor, with a personal best of 2:49 and a personal best at Boston of 2:54. He was for many years a corporate and business lawyer, both with the Boston law firm Hale and Dorr and serving as counsel and general counsel to Boston area technology companies. He is a graduate of Cornell University and the University of Michigan Law School.