Mary Jepkosgei Keitany

On 4 November 2018, Keitany won the TCS New York City Marathon in a time of 2:22:48, a time just 17 seconds off the course record. For the first half she needed 75:30 and the second 66:58, in a women-only race. Her 10 km interval times were 37:07, 35:02, 31:33, 31:47 and 7:19 for the last 2.195 km. Keitany's time between km 25 and km 35 was 30:53. Vivian Cheruiyot was the runner up in 2:26:02, and last year's winner Shalane Flanagan was in third place with 2:26:22.

She won the TD Beach to Beacon 10k on 5 August 2017 in a course record time of 30:41 minutes. She improved the cr set at last year's run.

On 10 September 2017, Keitany won the 2017 Great North Run in 1:05:59, 20 seconds off her course record from 2014.

On 5 November 2017, Keitany finished at the TCS New York City Marathon at a time of 2:27:54.

She announced her pregnancy at the start of 2013 and skipped that year's competitions.

Her former half marathon best of 1:05:50 (2011) lived three years as the women's world record. She also has held the world record at 10 miles (50:05 minutes), 20 kilometres (1:02:36), and 25 kilometres (1:19:53), all of which were set in road races. In August 2018 she was honored by the Shoe4Africa foundation who funded and built the Mary Keitany Shoe4Africa school in Torokwonin, Baringo County, Kenya. She and her husband Charles sit on the Shoe4Africa school board.

She is married to another runner Charles Koech and gave birth to her first child, Jared, in June 2008, and her second child, Samantha, in April 2013. She stopped training and other sporting activities at the third month of pregnancy, and resumed when the babies were six months old. She trains in Iten, is managed by Gianni Demadonna.

She also won the Berlin 25 kilometre race, setting a new world record of 1:19:53 hours. The previous record was set by Mizuki Noguchi of Japan in 2005. Keitany finished almost five minutes ahead of runner-up Alice Timbilili.

In April, Keitany won the London Marathon, setting a new world record (women only) at 2:17:01 hours. She bettered Radcliffe's record by 41 seconds, which she set at the 2005 London Marathon. Tirunesh Dibaba finished second, 55 seconds behind. (Radcliffe has run a faster time in a mixed gender event, but that is a separate record.) Her 1st half marathon split time was 1:06:54 hours.

Born in Kabarnet, Baringo County, Keitany started running while in primary school. In 2002, she joined the Hidden Talent Academy.

This performance qualified her for the World Half Marathon Championships in Birmingham, where she outpaced Aberu Kebede to win her first world championship, set a new personal best of 1:06:36, and broke the championship record. She won a second gold medal as part of the winning Kenyan squad in the team competition. Reflecting on the win, she noted, "It's my best ever time, so I'm so happy.... I had a baby just 1 year and 3 months ago." Her 15 kilometre interval time, 46:51 minutes, was faster than the world record of 46:55 held by Kayoko Fukushi of Japan; however, Keitany's time was not ratified as a new world record because of the lower elevation of the 15 kilometre mark compared to the race start. Her time was the second fastest ever in the half marathon (after Lornah Kiplagat). The half marathon time was a new African record, with the previous record of 1:06:44 hours set by Elana Meyer of South Africa in 1999. Keitany also beat the previous Kenyan record of 1:06:48 that she set in Udine two years earlier. The director of the New York City Marathon, Mary Wittenberg, suggested that she could become a world-beater over the full marathon distance in the coming years.

Mary Jepkosgei Keitany (born 18 January 1982) is a Kenyan long distance runner. She is the world record holder in a women-only marathon, having won the 2017 London Marathon in a time of 2:17:01. As of November 2019, she sits third all-time at both the marathon and half marathon.

In January, she placed 21st in her first senior race at the Shoe4Africa 5 kilometre women's race.