They tried to burn the 33-year-old athlete alive.
Runner Rebecca Cheptegei, who represented Uganda at the Paris Olympics, suffered at the hands of her lover.
The incident happened at the athlete's home, Sky News reports. Rebecca had a fight with her boyfriend named Dixon.
The man took a canister of gasoline and splashed the flammable liquid on the woman, then set it on fire.
The fire engulfed the runner, but the arsonist himself was also injured by the flames. The athlete was hospitalized with burns on 75% of her body.
There was a property conflict between the couple. They were arguing over the land on which Rebecca's house was built.
In the summer, Cheptegei competed in the Paris Olympics. She took part in the marathon and placed 44th.
