She is hoping for a silver medal at Comrades.
Saturday is the 44th running of the annual South African race.
Science is outing the alleged cheaters.
He made a comeback from a bad ING New York City Marathon showing last year.
The returning champion hopes to win the grueling 56K race.
He came from behind with just 1K to go.
The former champions will be squaring off.
Nurgalieva wins for second time. Written By: David Monti with Riël Hauman (c) 2010 Race Results Weekly, all rights reserved Mabuthile
The race is South Africa’s second largest ultramarathon. Written By: Riël Hauman (c) 2010 Race Results Weekly, all rights reserved