The elite men line up for the start of the 2014 Boston Marathon. (WBZ-TV)
2014 Boston Marathon
The elite women line up for the start of the 2014 Boston Marathon. (WBZ-TV)
2014 boston marathon
The Elite Men's division starts the 118th Boston Marathon (Photo by Alex Trautwig/Getty Images)
2014 boston marathon
The Elite Men's division starts the 118th Boston Marathon (Photo by Alex Trautwig/Getty Images)
2014 Boston Marathon
The Elite Women's division starts the 118th Boston Marathon (Photo by Alex Trautwig/Getty Images)
2014 Boston Marathon
Ernst Van Dyk after winning the 2014 Boston Marathon. (WBZ-TV)
2014 Boston Marathon
Shalane Flanagan took the early lead in the women's race. (WBZ-TV)
Shalane Flanagan
Shalane Flanagan. (Photo by Alex Trautwig/Getty Images)
2014 boston marathon
Ernst F. Van Dyk of South Africa crosses the finish line in first place in the men's wheelchair race. (Photo by Jared Wickerham/Getty Images)
2014 boston marathon
Tatyana McFadden of the United States crosses the finish line in first place in the women's wheelchair race during. (Photo by Jared Wickerham/Getty Images)
Tatyana McFadden
Tatyana McFadden (WBZ-TV Photo)
2014 boston marathon
Ernst van Dyk (Photo by Jim Rogash/Getty Images)
2014 Boston Marathon
Kenya's Rita Jeptoo pulled away from the lead pack around mile 23 and never looked back. (WBZ-TV)
2014 boston marathon
Tatyana McFadden (Photo by Jim Rogash/Getty Images)
Meb Keflezighi
Meb Keflezighi broke away from the pack in Wellesley. (WBZ-TV)
2014 boston marathon
Rita Jeptoo of Kenya crosses the finish line of the 2014 Boston Marathon. (Photo credit TIMOTHY A. CLARY/AFP/Getty Images)
2014 boston marathon
Rita Jeptoo (Photo credit TIMOTHY A. CLARY/AFP/Getty Images)
2014 boston marathon
Rita Jeptoo (Photo credit TIMOTHY A. CLARY/AFP/Getty Images)
2014 boston marathon
Shalane Flanagan crosses the finish line. (Photo by Jim Rogash/Getty Images)
2014 boston marathon
Meb Keflezighi of the United States crosses the finish line in first place. (Photo by Jared Wickerham/Getty Images)
2014 boston marathon
Meb Keflezighi (Photo by Jared Wickerham/Getty Images)
2014 boston marathon
Shalane Flanagan receives medical attention after crossing the finish line. (Photo by Jim Rogash/Getty Images)
2014 boston marathon
Meb Keflezighi (Photo by Jared Wickerham/Getty Images)
2014 boston marathon
Meb Keflezighi (Photo credit TIMOTHY A. CLARY/AFP/Getty Images)
2014 boston marathon
Men's Elite division winner Meb Keflezighi (Bottom-L) of the US and Women's Elite Division winner Rita Jeptoo of Kenya pose for photographers. (Photo credit TIMOTHY A. CLARY/AFP/Getty Images)
2014 boston marathon
Shalane Flanagan (Photo by Andrew Burton/Getty Images)
2014 boston marathon
Rita Jeptoo hugs fans. (Photo by Andrew Burton/Getty Images)
2014 boston marathon
Buzunesh Deba of Ethiopia crosses the finish line. (Photo by Jim Rogash/Getty Images)
2014 boston marathon
Sharon Cherop of Kenya crosses the finish line. (Photo by Jim Rogash/Getty Images)