After a visit to Portugal, plans were made for her to join the Lisbon-based Benfica athletics club, but at the last minute Mozambican government denied her permission. That year, after only a few months' training, she won a silver medal in the 800 metres at the 1988 African Championships in Annaba, Algeria before competing in the 1988 Summer Olympics less than a month later. She ran a personal best time of 2:04.36, but only finished seventh in her first round heat, failing to progress to the semi-finals. Mutola was still only fifteen years old.