The 2011 London Marathon was the 31st running of the annual marathon race in London, England, which took place on Sunday, 17 April. The elite men's race was won by Kenya's Emmanuel Kipchirchir Mutai in a course record time of 2:04:40 hours and the elite women's race was won by Mary Jepkosgei Keitany, also of Kenya, in 2:19:19.

Patrick Makau Musyoki is a runner from Kenya. He is a former world record holder in the marathon—His time of 2:03:38, run at the 2011 Berlin Marathon, was the world record for two years, until it was beaten by Wilson Kipsang Kiprotich at the 2013 Berlin Marathon. He is also notable for his half marathon performances, having won a number of prominent competitions in Europe in sub-1-hour performances.