COROS is proud to announce a new partnership with middle-distance star Cooper Lutkenhaus. After a historic 2025 season that saw him run 1:42.27 for 800m (lowering the high school record by over 5 seconds), Cooper turned professional in his junior year and has wasted no time making an impact. He opened his pro career with wins at both the Dr. Sander Scorcher (800m) and the Millrose Games (600m), establishing himself as one of the most exciting young talents in the sport.

Cooper's COROS Gear:

COROS PACE 4

COROS Heart Rate Monitor

COROS POD 2

Why Cooper?

At just 17 years old, Cooper already brings a thoughtful, intentional approach to his training and performance. “I love to look at the heart rate. If that’s workouts or just easy runs. I’ve always been interested on, you know, if I feel really bad, is the heart rate going to be really high? Or if I feel really good, what’s the difference?” he said. “And then during workouts, something that I try to do is see how low I can get it in between reps.”

This data-curious mindset makes Cooper a natural fit for COROS. He and his coach often review post-workout data together. It's easy to forget now that he's a professional, but Cooper still faces the day-to-day life of a high schooler. "It's a little harder just because we can't have phones in school," he said. "But we kind of look at it the next day and just see."

Why COROS?

Cooper’s relationship with COROS began even before he wore the watch. His brother bought him a heart rate monitor for Christmas a couple years back. That initial introduction helped spark an interest in tracking performance and recovery. Today, Cooper wears the PACE 4 and continues to train with that same HR monitor, using it both in workouts and on the elliptical during double sessions. “For cross-training, heart rate's all that I worry about. I'm looking at it every other minute I feel like.”

What drew him to COROS? In Cooper's words: “To me, COROS seems so easy. You can combine so many things at once to see it all at one time. It's so easy to check on your training.”

A Strong Start to the Pro Career

That clarity has helped Cooper get off to a fast start as a professional. At the Dr. Sander Scorcher, he led wire-to-wire in 1:45, setting a new Indoor U20 American record. “Training had gone really well. I was a little nervous just with it being the first race, probably more than I really have been before,” he said. “But on the line, as soon as the gun goes off, I’m always fine.”

At the end, Cooper's stride data shows remarkable resistance to fatigue late in the race. "I felt like I had a lot left with 200 to go, so I could open it up a little more."

What followed was a disrupted training week ahead of Millrose due to snow and travel. Cooper still executed. “I did my workout on a treadmill, just because all of our tracks were snowed over. And that was definitely the hardest workout I’ve ever done,” he said. “4:17 pace on a treadmill does not feel like 4:17 pace.”

Despite the challenging week of training, he returned to New York City and won the Millrose Games 600m in 1:14.15. A U20 Indoor World Record.

Looking Ahead

Looking ahead, Cooper is targeting a few more big 800m performances this indoor season. “Hopefully in that 1:43 to 1:44 low range. I think that's definitely possible right now if I can just get in the right race for it.” Longer term, he has his sights set on representing the U.S. at the 2026 World Indoor Championships and building toward 2028.

COROS is excited to support Cooper on this journey, offering tools to track his performance, support his recovery, and evolve with his needs over time. As he put it: “The technology that you guys have been able to have in the past couple years (and I know it's definitely gonna grow over the next three years) it can make me a better athlete moving forward.”

We’re just getting started.