A Chance to Finish the Marathon Hundreds of runners joined victims of the Boston Marathon bombings to finish the last mile of the race, reclaiming the triumph of crossing the finish line. More than 2,000 runners and bombing victims gathered in light rain Saturday morning to run the final mile of the race, the world's oldest annual marathon. Saturday's event, known as OneRun, began at Kenmore Square and concluded at the official finish line. Explosions near the finish line on April 15 killed three people and wounded more than 260. The organizer Kathleen McGonagle said OneRun honored victims and emergency workers and allowed runners to reclaim the final mile.