Mark Kosgey Kiptoo is a Kenyan long-distance runner who set the world record in the marathon for the Masters age group by running 2:07:50 in the 2018 Frankfurt Marathon. He also specialized in the 5000 metres throughout his career. He is a two-time gold medalist in the event at the Military World Games and won bronze medals over the distance at the 2010 Commonwealth Games and the 2010 African Championships in Athletics. He has also represented Kenya at the IAAF World Cross Country Championships and the All-Africa Games.

The Frankfurt Marathon is a marathon which has taken place every year in Frankfurt am Main since its inception in 1981. It is the longest-established city marathon in Germany and in terms of the number of finishers, Germany's second-largest. It is organised by the agency motion events.