Boston (2017)

The history of the Boston Marathon, from a first field of 15 runners through the women who forced their way in, to the 2013 bombing and the race that answered it a year later. Jon Dunham, who made Spirit of the Marathon, directs. The closing stretch is heavy going, so it suits a thoughtful evening more than a party, but no film does more to explain why qualifying for Boston means so much to American runners.