Gemechu was suspended from competition in November 2023 whilst an investigation into a failed doping test took place. In October 2024, Gemechu was banned for four years and had all results from 22 March 2020 stripped.[2][3]
In March 2022, Gemechu placed second at the Istanbul Half Marathon (1:05:52) to take her second successive Lisbon Half Marathon title two months later (1:06:44). In August, she finished second at the Antrim Coast Half Marathon in Northern Ireland, setting new personal best of 1:05:01. She debuted in the marathon in October, placing third at the Amsterdam Marathon with a time of 2:18:59.[1]
In March 2023, on her debut in a World Marathon Major and her second race over the classic distance, the 24-year-old finished second at the Tokyo Marathon with a new personal best time of 2:16:56, becoming just the eighth woman in history to run a sub-2:17.[1][7]
On 23 November 2023, Gemechu was provisionally suspended for a doping infringement. In October 2024, she was banned for four years and had 3 years worth of results annulled.[8][3]