It’s a humbling reminder of Cooper Lutkenhaus’ youth that, even as a double U.S. champion and world indoor gold medalist, the teenager joins the video call from his dad’s account.“Let me go holler at Cooper, he’s out in the foyer,” says George Lutkenhaus. He’s a proud dad, a former collegiate runner, and now directs the athletics program at the Texas high school that his son Cooper, 17, attends.That’s where Lutkenhaus is calling from: a white-walled office at school, with dad George working in the background.“I’m a pretty normal kid for the most part, besides the running,” Lutkenhaus says. Not normal is an apt way to describe what he’s achieved over two laps in the past two years.It started with a collection of age-group bests, notably taking down Michael Granville’s 800m high-school record from 1996. Last year, over the same distance, he became the youngest man to qualify for the final at U.S. nationals. Then, in said final, he produced the fastest second lap in the field to finish runner-up to Donovan Brazier, earning his place at the Tokyo World Championships with an under-18 best time (1:42.27s).He signed with Nike just after that, the first time an American middle-distance runner has turned professional in high school. Then, two months before his 17th birthday, he became the country’s youngest athlete in World Championship history.That brings us to this season. Lutkenhaus describes 2026 as “an incredible freshman year of the professional scene”.He’s gone stratospheric over the past eight months, with a record (excluding heats) of eight wins from 10 races. That includes indoor and outdoor national titles in March and July. “There weren’t too many negatives,” he smiles. “I learned a lot about myself and how to be a better racer.”