Jemima Jelagat Sumgong became Kenya’s first ever winner of the Olympic women’s marathon race.
She crossed the line in two hours, 24 minutes and four seconds.
Bahrain’s Eunice Jepkirui Kirwa took silver while Ethiopian Mare Dibaba won bronze.
Great Britain enjoyed a stunning gold rush on day nine of the Games.
Jason Kenny defended his men’s sprint title in the track cycling beating fellow Brit and Rio room mate Callum Skinner in the final.
It was Kenny’s fifth career Olympic gold.
Britain’s Andy Murray became the first man to win successive Olympic men’s singles tennis titles when he beat Juan Martin Del Petro in the final.
This year’s Wimbledon champion beat the Argentine 7-5, 4-6, 6-2, 7-5.
Earlier in the day Murray’s British teammate Justin Rose won the golf gold medal as the sport made a successful return to the Olympics after a 112-year absence.
Rose beat Sweden’s Henrik Stenson by two shots in a competition that went all the way to the final hole.
American Matt Kuchar took the bronze.