Residing in Ngong, Kenya, the athlete known as the "Eldoret Express" has made significant strides in her career. She began her journey in athletics at Kapsombeiwo Primary School and has since become a prominent figure in the sport. She trains with the Kenya Police team and is coached by Claudio Berendelli from Italy.

| Season | Event | Rank |
|---|---|---|
| 2012 | Women's 800m | 6 |
| 2008 | Women's 800m | S Silver |
She became the first Kenyan woman to win a medal in the 800m at a world championship by securing gold in 2007 in Osaka, Japan. In 2006, she was honoured with the 'Kenyan Sportswoman of the Year' award.
In 2011, she faced a significant setback due to a muscle injury that required treatment in Monaco. This injury kept her from running for much of that year.
Her father, Michael Busienei, was also an 800m runner. She looks up to athletes like Wilfred Bungei, Wilson Kipketer, and Paul Ereng as her idols.
She hails from Kaprisang in Nandi Central, a village renowned for producing top athletes like Wilson Kipketer, Sammy Kosgei, and Henry Rono. The village boasts over 30 medals from various global competitions.
Initially starting as a 400m hurdler, she switched to the 800m during the selection for the 1999 World Youth team due to the absence of hurdles. This switch proved to be a pivotal moment in her career.
She mentors Eunice Sum and hopes her guidance will keep Kenya at the forefront of women's 800m running. She discovered Eunice at school games and was thrilled to find someone with such talent.
Looking ahead, she aims to compete in both the 800m and 1,500m events at the Olympics. She believes it is time to achieve something unique in her athletic career.
The athlete's journey from Kapsombeiwo Primary School to becoming an international champion is inspiring. Her dedication to training and mentoring young talent ensures that her legacy will continue to influence future generations of athletes.
Residing in Ngong, Kenya, the athlete known as the "Eldoret Express" has made significant strides in her career. She began her journey in athletics at Kapsombeiwo Primary School and has since become a prominent figure in the sport. She trains with the Kenya Police team and is coached by Claudio Berendelli from Italy.