Lemi Berhanu Hayle of Ethiopia reacts during a press conference after winning the 120th Boston Marathon. (Photo by Tim Bradbury/Getty Images)
2016 Boston Marathon
Women's winner Atsede Baysa of Ethiopa and men's winner Lemi Berhanu Hayle of Ethiopia pose at the finish line after winning the 120th Boston Marathon on April 18, 2016 in Boston, Massachusetts. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Atsede Baysa and Lemi Berhanu Hayle won the women's and men's races, respectively, at the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Atsede Baysa of Ethiopa celebrates after crossing the finish line to win the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Atsede Baysa of Ethiopa celebrates after crossing the finish line to win the 120th Boston Marathon. (Photo by Mike Lawrie/Getty Images)
2016 Boston Marathon
Lemi Berhanu Hayle of Ethiopia raises the trophy after winning the 120th Boston Marathon, while Mayor Marty Walsh looks on. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Lemi Berhanu Hayle of Ethiopia reacts as he nears the finish line to win the 120th Boston Marathon. (Photo by Mike Lawrie/Getty Images)
2016 Boston Marathon
Lemi Berhanu Hayle of Ethiopia crosses the finish line to win the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Lemi Berhanu Hayle of Ethiopia crosses the finish line to win the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Atsede Baysa celebrates after crossing the finish line to win the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Atsede Baysa celebrates after crossing the finish line to win the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Atsede Baysa of Ethiopa crosses the finish line to win the 120th Boston Marathon on April 18, 2016 in Boston, Massachusetts. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Tatyana McFadden of the United States celebrates with the Martin Richard family after crossing the finish line to win the women's push rim wheelchair race during the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Tatyana McFadden of the United States celebrates with the Martin Richard family after crossing the finish line to win the women's push rim wheelchair race during the 120th Boston Marathon. (Photo by Mike Lawrie/Getty Images)
2016 Boston Marathon
Tatyana McFadden crosses the finish line to win the women's push rim wheelchair race during the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Marcel Hug of Switzerland celebrates after winning the men's push rim wheelchair race during the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)
2016 Boston Marathon
Marcel Hug of Switzerland celebrates as he crosses the finish line to win the men's push rim wheelchair race ahead of Kurt Fearnley of Australia and Ernst Van Dyk of South Africa during the 120th Boston Marathon. (Photo by Mike Lawrie/Getty Images)
2016 Boston Marathon
Marcel Hug of Switzerland crosses the finish line to win the men's push rim wheelchair race during the 120th Boston Marathon. (Photo by Maddie Meyer/Getty Images)