Mehdi Baala is a French middle-distance runner competing mainly in the 1500 metres event. Baala has won several major international championships medals in the 1500 metres event – an Olympic Games bronze, a World Championships silver, two European Championships golds and a European Indoor Championships bronze. Moreover, he has won several medals in the 1500 metres event of the European Cup, IAAF World Cup and the IAAF World Athletics Final. Baala is considered to be one of the best French middle-distance runners of all time. As of February 2024, he holds French national outdoor records for three distances and French national indoor records for three distances.

The 1500 metres or 1,500-metre run is the foremost middle distance track event in athletics. The distance has been contested at the Summer Olympics since 1896 and the World Championships in Athletics since 1983. It is equivalent to 1.5 kilometers or approximately 15⁄16 miles. The event is closely associated with its slightly longer cousin, the mile race, from which it derives its nickname "the metric mile".