Runners are blurred by a slow camera shutter speed as they begin the 2015 Dick's Sporting Goods Pittsburgh Marathon on Sunday, May 3, 2015.

Runners await the start of the 2015 Dick's Sporting Goods Pittsburgh Marathon

 Hand cyclists at the start of the 2015 Dick's Sporting Goods Pittsburgh Marathon.

 Stephen Njoroge of Kenya approaches the finish line.

 A runner cools off in the mist of an open fire hydrant.

Emergency personnel rush a 25-year-old runner who collapsed just shy of the finish line after suffering cardiac arrest.  The medics performed CPR and used a defibrillator to restart his heart.

Clara Santucci of Dilliner, Green County, won the Pittsburgh Marathon women's race for the second straight year.

 Stephen Njoroge of Kenya wins the Pittsburgh marathon men's race.

Stephen Njoroge of Kenya, wrapped in the Kenyan flag, walks away from the finish line after winning the 2015 Dick's Sporting Goods Pittsburgh Marathon on Sunday, May 3, 2015.