Career
Lempus began competing internationally around 2017, quickly making a mark in long-distance road events. In 2018, she set her personal best in the marathon, finishing third at the Shanghai International Marathon with a time of 2:23:40. Her progress continued with a win at the 2019 Cracovia Half Marathon.
On 5 September 2021, Lampus finished the Paris Half Marathon in first place but this result was later disqualified due to doping.
Doping ban
In August 2022, the Athletics Integrity Unit (AIU) announced that she had tested positive for triamcinolone acetonide, a prohibited glucocorticoid, from an in-competition sample taken during the Paris Half Marathon.
Further investigation by the AIU, in collaboration with the Anti-Doping Agency of Kenya (ADAK), revealed that Lempus submitted falsified medical documents in an attempt to justify the presence of the substance. A hospital superintendent confirmed the documents were fabricated and that no such treatment had been administered.
She was issued with a five-year ban from competition (reduced from six-years due to her admission of the violations), effective from 14 October 2022 until 14 October 2027. All results from 5 September 2021 onward, including her Paris win, were disqualified.
Kenya