Geoffrey Kipsang Kamworor (born 22 November 1992) is a Kenyan professional long-distance runner. He won the silver medal in the 10,000 metres at the 2015 World Championships in Athletics. Kamworor claimed victories at the World Half Marathon Championships three times in a row from 2014 to 2018.
He took individual titles at the World Cross Country Championships in 2015 and 2017, and finished third in 2019. He won his first World Marathon Major at the 2017 New York City Marathon and regained his title in 2019, after a second-place finish in 2015. Kamworor also placed second at the 2023 London Marathon and earned three other podium finishes at a World Marathon Majors.
At age 18, he was the 2011 World Junior Cross Country champion. Kamworor is the former half marathon world record holder, having won the Copenhagen Half Marathon with a time of 58:01 in September 2019. His record stood until December 2020 when it was bested by Kibiwott Kandie at the 2020 Valencia Half Marathon.
As of Sep 14, 2026: Half Marathon 58:01 (#8 all-time), 10 000 m 26:52.65 (#56 all-time), 2026 season best 58:14 (Feb 14, 2026, Ras Al Khaimah (UAE)) · Last competition: TCS London Marathon, Apr 26, 2026, 2:05:38 · World Championships: 1 silver · 33 years old
KENMen