Disgraced Olympic sprinter Marion Jones has been sentenced to six months in prison for lying to federal prosecutors about her steroid use.

US District Court Judge Kenneth Karas imposed the sentence after Jones pleaded guilty to two charges last October, part of a stunning demise of the five-time medallist from the 2000 Sydney Olympics.

Karas gave Jones six months for lying about steroid use and two months - to run concurrently - for a separate charge of misleading federal investigators about her knowledge of a check fraud case involving her ex-boyfriend, former 100 metres world record holder Tim Montgomery.

Jones, 32, became the biggest name in international sport to admit to using steroids with her guilty plea in October. She tearfully admitted to betraying the trust of her fans and country after years of vehemently denying she used performance enhancing drugs.

She confessed to lying to federal investigators in 2003 when she denied knowing that she took the banned substance tetrahydrogestrinone (THG), known as "the clear," before the 2000 Olympics.

As part of her plea deal, prosecutors asked the judge to sentence her to between zero and six months in prison, and defence lawyers asked for mercy because she had suffered public humiliation.

Jones has been stripped of the five track and field medals she won in Sydney, three of them gold, and all of her performances as of September 2000 have been erased from the record books.

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