In 2017, he won the Rotterdam Marathon in Rotterdam, Netherlands with a time of 2:06:04. That year, he also won the Ljubljana Marathon in Ljubljana, Slovenia with a time of 2:08:33.
Marius Kimutai winning the 2017 Ljubljana Marathon
In 2019, he won the Hangzhou International Marathon in Hangzhou, China with a time of 2:10:05 which was also a new course record.[1][2] He became the first Bahraini winner of the event.[2]
In 2023 Marius Kimutai won the Barcelona Marathon with 02:05:06
On 10 April 2024, Marius Kimutai returned a signed Admission of Anti-Doping Rule Violations and Acceptance of Consequences form, confirming that he admitted to the anti-doping rule violations and accepted the claimed period of ineligibility. On 15 April, Marius Kimutai was suspended for three years for doping.[3]
