Overview
- The 129th Boston Marathon officially started at 6 a.m. EDT with a ceremonial military march by the Massachusetts National Guard, commemorating the 250th anniversary of the American Revolution.
- Elite wheelchair racers launched their events shortly after 9 a.m., followed by professional runners and staggered waves of amateur participants.
- Defending champions Sisay Lemma, Hellen Obiri, Marcel Hug, and Eden Rainbow-Cooper are competing against a historically deep field of international contenders.
- This year marks the 50th anniversary of the wheelchair division, with Bob Hall, its inaugural competitor, serving as grand marshal for the event.
- Near-perfect weather conditions, with temperatures in the 50s and light winds, are expected to support strong performances along the 26.2-mile course from Hopkinton to Boston.