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SALT LAKE CITY — It was one for the record books.

Brigham Young University alum and Olympian Conner Mantz smashed the American marathon record Sunday in Chicago.

In an interview later that day with KSL-TV, Mantz said his emotions were "pretty gone."

"I'm feeling happy, feeling excited, pumped," Mantz said, while adding, "it's been very tough. It's been a long day."

The day started on the streets of Chicago with a 26.2-mile race.

"With a couple miles to go, I was pretty confident I was going to break the record," Mantz said.

That was the goal that Mantz and his coach, Ed Eyestone, had been working toward for months.

"I knew I had broken the record when I crossed the finish line," said Mantz. "I was pretty happy."

Mantz ran the Chicago Marathon in 2:

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