Craig Leon

Collegiate Leon attended Ohio University, where he became a walk-on for Ohio's cross country and track teams. Ohio coach Mitch Bentley had told Leon, "You want to walk on? Sure, go ahead".

Post-collegiate After college, Leon took a brief hiatus from high-volume training for a period of two years until he began training for the marathon in 2009. He made his marathon debut at the 2010 Eugene Marathon, where he won in 2:23:15. He then qualified for the 2012 US Olympic Trials after running the marathon at the 2010 USA Marathon Championships in 2:18:29. During the summer of 2015, he earned his first call-up to the United States' distance roster for the 2015 Pan American Games, where he finished in 5th place overall in the men's marathon.