Mark Kosgey Kiptoo (born 21 June 1976) is a Kenyan long-distance runner who specializes in the 5000 metres.
He was born in Lugari. One of his earliest major events was the 2007 Military World Games, where he won the 5000 m and took second place behind compatriot John Cheruiyot Korir over 10,000 metres. At the 2008 World Athletics Final he finished sixth in the 3000 metres and fourth in the 5000 metres. At the 2009 World Athletics Final he finished eighth in the 3000 metres and fifth in the 5000 metres. He finished fourteenth at the 2008 World Cross Country Championships and seventh at the 2009 World Cross Country Championships.[1] He also takes part in road running competitions and finished as the runner-up at the 2009 World 10K Bangalore behind Deriba Merga.[2]
At the 2010 African Championships in Athletics he formed part of a Kenyan podium sweep of the 5000 m taking bronze behind Edwin Soi and Vincent Yator.[3] He ran a new personal best at the DN Galan Diamond League meeting, running 12:53.46 to secure a major circuit win over 5000 m.[4] In light of these achievements, he earned selection for the 2010 Commonwealth Games and he took the 5000 m bronze medal behind Moses Kipsiro and Eliud Kipchoge.[5]
He opened his 2011 season with a podium finish at the Parelloop 10K in the Netherlands in April.[6]
His personal best times are 7:32.97 minutes in the 3000 metres, achieved in May 2009 in Doha; 12:53.46 minutes in the 5000 metres, achieved in August 2010; and 27:14.67 minutes in the 10,000 metres, achieved in June 2008 in Eugene.[1]