Leonel Manzano participant in 2014 USA Outdoor Track and Field Championships
In the 1500 m Final at the 2012 Summer Olympics, Leo Manzano unleashed his signature kick to claim the silver medal. Manzano became the first American to medal in the 1500 m since Jim Ryun won silver in Mexico City 1968, breaking a 44-year drought for the U.S. men's middle distance running.
2014
 
Leonel Manzano won another 1500 meter title in 3:38.63 at the 2014 USA Outdoor Track and Field Championships in Sacramento, California. On 18 July, Manzano ran a personal best of 3:30.98 to take 8th place at the Diamond League Herculis Monaco. Manzano's time in the incredibly deep field was the fastest clocking of 8th place in any meet in history.
2015
Leonel Manzano placed 3rd at 1500 meters at the 2015 USA Outdoor Track and Field Championships and 10th in 2015 World Championships in Athletics – Men's 1500 metres
2016
Leonel Manzano placed 4th at 1500 meters at the 2016 United States Olympic Trials (track and field). Manzano is a Coca-Cola spokesperson.
2019
On July 28, 2019, Leo announced his retirement citing a calf injury from February and a desire to spend more time with family
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