Story thread · 4 reports / 3 sources
This Workout Helps 17-Year-Old World Champion Cooper Lutkenhaus Build Record-Breaking Speed
runnersworld.com · 14d
The 800-meter phenom literally dreams of speedwork. Find out why.
First report: 17-Year-Old Cooper Lutkenhaus Wins His First U.S. Outdoor Title in Dominant Fashion — runnersworld.com, 15d
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