The 2012 London Marathon was the 32nd running of the annual marathon race in London, England, which took place on Sunday, 22 April. Both of the elite races were won by Kenyan athletes, and Ethiopia's Tsegaye Kebede was the only non-Kenyan to reach the podium in either race. Mary Jepkosgei Keitany won the women's elite race for the second year running with a Kenyan record time of 2:18:37 hours. Wilson Kipsang Kiprotich was the men's race winner with a time of 2:04:44 – four seconds off Emmanuel Kipchirchir Mutai's course record set at the 2011 London Marathon.

Martin Kiptolo Lel is a Kenyan professional long distance and marathon runner. He won the London Marathon in 2005, 2007, and 2008, the New York City Marathon in 2003 and 2007 and the Great North Run in 2007 and 2009. His personal best time, as of April 2008, is 2:05:15, which he ran in the 2008 London Marathon setting a course record. Lel is coached by Claudio Berardelli and lives in the Rift Valley region of Kenya.