America's No. 1 High School Cross Country Runner Doesn't Wear A Watch

Marcelo Mantecon has spent his whole career as the young guy. Not anymore.

The Belen Jesuit senior joins Dominic for the next episode of our Fleet Feet series leading into the Brooks Cross Country National Championships, and he arrives carrying something he didn't have last December: a target. He talks about welcoming the pressure that comes with being the top returner, about what he absorbed watching Jackson Spencer stay calm on start lines while his own nerves churned, and about learning to convert that nervousness into excitement instead of dread.

The training picture is stranger and simpler than you'd expect from the nation's most-watched high schooler. He doesn't wear a watch most days. He can't tell you his exact mileage, and he runs Miami's brutal humidity. He credits sleep above everything else for keeping himself intact, and he credits Frankie Ruiz, the coach he has known since birth, for a program built on consistency rather than heroics.

Marcelo also revisits Balboa Park in detail: the gap that opened at the bottom of the hill, getting caught, and praying for one more surge with 300 meters left. His plan for the rematch is almost defiant: Have fun. Stay aggressive. Race like he still has nothing to lose.

Along the way, the two discuss Flagstaff team trips and flooded shoes in the Everglades, his sister's rise, UNC and a future in finance, why the class of 2027 might be one of the deepest ever, and a post-race celebration involving roughly a hundred donuts.

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