At just 17 years old, a Denton County track star is making history on the world stage.

Cooper Lutkenhaus, a junior at Justin Northwest High School, is now the youngest ever world indoor champion after a record-setting performance that put him in the history books.

Lutkenhaus achieved the milestone during spring break, capping off a whirlwind stretch that saw him rise to the top of the sport while still balancing life as a high school student.

After crossing the finish line, the moment was difficult to process.

“I don’t know, just like a lot of just things combined just kind of, you know, were lifted off my shoulders and it was just like, I’m the world champion. And it’s pretty hard to wrap my head around that, only being 17, but just being able to cross that line in first, it just felt awesome,” Cooper said.

Despite the global spotlight, Lutkenhaus said his return to school on Wednesday felt mostly normal.

“It’s like, oh, he’s just doing what he’s doing. But I know within my little circle of trusted people, we all know how big of a deal it was,” Lutkenhaus said.

Running is part of the family. Lutkenhaus comes from a household of athletes, with both his parents and sibling connected to the sport. His mother, Tricia, was recently named principal of Justin Northwest High School, while his father, George, serves as the district’s director of athletics.

He said watching his older brother compete helped inspire his own journey.

“Being able to look up to my older brother who ran, I was an eighth grader when he was a senior in high school. And getting to watch him compete, I always wanted to do what he did,” Cooper said.

Lutkenhaus has already taken another major step in his career, becoming one of the youngest athletes to turn professional in track and field after signing with Nike at just 16 years old.

This story was originally reported for broadcast by NBC DFW. AI tools helped convert the story into a digital article, and an NBC DFW journalist edited it again before publication.