Thousands take part in run to honor fallen officers ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Jessica Rinaldi For The Boston Globe Kyric Avery, left, of Arlington, and Jenny Ahn, of Somerville, embraced after completing the event. Jessica Rinaldi For The Boston Globe Thousands of people participated in race, which included a half marathon and a five-mile run. Jessica Rinaldi For The Boston Globe Christie Matlellan, of Weymouth, and Larry Harmon, of Stoughton, ran in the race. Members of the 31st Massachusetts Transit Police Academy crossed the finish line. Jessica Rinaldi For The Boston Globe MIT EMS member Kat Goldsmith, left, who knew fallen MIT Police officer Sean Collier, ran in his honor.