BOSTON - (April 17, 2017) - The elevator door swung open on the fifth floor of the Sheraton Boston hotel and Kathrine Switzer, age 70, strode down the hallway with a purpose. With an adidas rolling bag behind her, she walked quickly as there were people to see and interviews to do. Her schedule resembled that of the the busiest executive on State St. or maybe, even, a Head of State like the Queen of England. On this week, leading into the 121st running of the Boston Marathon, Switzer was celebrating and being celebrated for her historic efforts 50 years ago. For the past week, Kathrine Switzer was the popular Queen of Boston.