Milcah Chemos Cheywa

In 2013, she won women's 3000m Steeplechase at the World Athletics Championships, clocking in 9:36.16.

At the start of 2012, Chemos ran at the Cross de San Sebastián and was the runner-up behind Nazareth Weldu. She began the 2012 IAAF Diamond League season in dominant fashion, winning the steeplechase in Shanghai, Eugene and Oslo. At the third of these victories, Chemos broke the African 3000 metre steeplechase record of Eunice Jepkorir, winning in a new personal best and Bislett Games record time of 9:07.14.

Chemos entered the 2011 World Championships in Daegu, South Korea as favourite for the 3000 metres steeplechase, having won all five of the Diamond League races in which she had competed prior to the championship. However, she was unable to improve upon her bronze medal of two years previous, finishing in third place, over 10 seconds behind race winner Yuliya Zaripova. Chemos subsequently lost again to Zaripova at the final Diamond League meeting of the season – the Memorial Van Damme in Brussels – but the Kenyan had already established an unbeatable lead in the Diamond Race standings and thus retained her title.

In 2010, Chemos won gold medals in the 3000 metre steeplechase at the African Championships and the Commonwealth Games, heading a Kenyan clean sweep of the medals in the latter. She also took Diamond League victories in Oslo, Rome, Eugene and London, en route to capturing the overall Diamond League title in the steeplechase.

As a result of her successes during the 2010 season, Chemos was one of five females shortlisted for the IAAF World Athlete of the Year award, won by high jumper Blanka Vlašić.

Her husband Alex Sang is a middle-distance runner. They have a four-year-old daughter as of 2010.

Chemos converted to steeplechase running in March 2009, after being introduced to the discipline by Richard Mateelong, the Olympic steeplechase medalist posted at KPC. She won her debut race, at the Athletics Kenya meeting in Kakamega, timing 9:54.4, and soon improved her PB to 9:22.33 at the KBC Night of Athletics meeting in Heusden-Zolder, Belgium. Competing in the 2009 World Championships, she won a bronze medal in a personal best 9:08.57, behind Marta Domínguez and Yuliya Zarudneva. Dominguez was disqualified afterward for a doping violation.

After schooling she went to the Kenya Police College (KPC) in Kiganjo in 2005. There she met Alex Sang and soon married. He urged her to start running, but she did not start serious training until 2008. Initially racing over 800 and 1500 metres, she finished 7th in the 800 metres at the 2008 Kenyan Olympic trials, 12 seconds behind the winner Pamela Jelimo.

Milcah Chemos Cheywa (born 24 February 1986 in Bugaa, Mount Elgon District) is a runner from Kenya who specialises in 3000 metres steeplechase. She was, until 2015, African record holder at the distance and is the gold medalist of the 2013 World Championships in Athletics.