Teresiah Kwamboka Omosa (born 5 February 1995) is a Kenyan long-distance runner who has won several international marathon and half marathon events.
Career Teresiah Kwamboka Omosa's career in road racing began around 2016, with an early notable performance being her 4th-place finish at the Cardiff University Cardiff Half Marathon, where she achieved a personal best of 1:13:09.
In 2018, she won the Salzburg Marathon with a time of 2:43:23. Her personal best in the marathon was set in 2021 at the S7 Marathon, where she clocked 2:30:12. This event took place in Fürstenfeld, Austria.
Omosa recorded her half marathon personal best of 1:10:29 on two occasions: first on 30 October 2022 and again on 25 March 2023, both in Valencia.
In 2022, she finished 7th at the Vienna City Marathon with a time of 2:31:44. In 2025, Omosa won the Tel Aviv Marathon with a time of 2:37:36. She also claimed victory at the 2025 Kigali International Peace Marathon, setting a championship record of 2:37:10.
Personal bests Marathon: 2:30:12 – S7 Marathon, Fürstenfeld, Austria, 2021 Half Marathon: 1:10:29 – Valencia, Spain, 2022/2023
Major results Year Competition Location Position Time 2016 Cardiff University Cardiff Half Marathon Cardiff, UK 4th 1:13:09 2018 Salzburg Marathon Salzburg, Austria 1st 2:43:23 2021 S7 Marathon Fürstenfeld, Austria 4th 2:30:12 2022 Vienna City Marathon Vienna, Austria 7th 2:31:44 2025 Tel Aviv Marathon Tel Aviv, Israel 1st 2:37:36 2025 Kigali International Peace Marathon Kigali, Rwanda 1st 2:37:10
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