Career
She competed at the 1984 Summer Olympics, finishing 8th in 400 metres race and reaching 200 metres semifinals. She became the first African woman to reach 400 metres Olympic final. Waithera still holds the Women"s 400 metres Kenyan record, 51.56, set in 1984.
In 2008 Elizabeth Muthuka broke the record, but tested positive for doping.
Thus Waithera"s record remains in force. As of 2008, Waithera remains also the latest Kenyan woman to compete 400 metres at the Olympics.
Waithera is a former African record holder over 400 metres. Waithera is from Shamata village.
She established the Avenue Sports Club in 1998 to give orphan children an opportunity to have a career in athletics.
In 1990 She was awarded a membership of the Arizona Sports Hall of Fame
She is not to be confused with a Kenyan steeplechase runner, born in 1990, who is also named Ruth Waithera.