Ethiopia's Lelisa Desisa and Kenya's Rita Jeptoo have won the men's and women's Boston Marathon, continuing African runners' dominance in the sport.
Desisa finished in two hours, 10 minutes and 22 seconds, beating countryman Gebregziabher Gebremariam and Kenya's Micah Kogo in a finishing sprint.
Jeptoo won in two hours, 26 minutes and 25 seconds, crossing the finish line more than 30 seconds ahead of her nearest challenger, Meseret Hailu of Ethiopia.
Americans took fourth place in both races, with Jason Hartmann and Shalane Flanagan finishing just off the podium.
No American has won since Lisa Larsen-Weidenbach in 1985.
The day before, New Zealand runners Kim Smith and Nick Willis both won road races as a part of the festival for the prestigious marathon.
Smith won the women's five-kilometre run, which is the first event of the three-race series run over different distances.
Willis won the International Street Mile in a race record time of four minutes and three seconds.