Former BYU runner Conner Mantz fell just short of his goal of becoming the first American man in 11 years to win the Boston Marathon on Monday, finishing less than 30 seconds behind winner John Korir of Kenya.

Mantz and fellow BYU alums Clayton Young and Rory Linkletter were in the lead pack for much of the race, but they were unable to stick with Korir when he broke away with about six miles remaining.

Korir, who won the 2024 Chicago Marathon in 2:02:43, finished the 2025 Boston Marathon in 2:04:45.

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Mantz stayed with the first chase pack, which ended up about 20 seconds behind Korir.

BYU legend Conner Mantz returns to Boston to chase down old demons

Mantz ultimately just missed the podium Monday, finishing fourth in 2:05:08.

Mantz’s previous best marathon time was 2:07:47, according to Citius Mag.

HE GAVE IT HIS ALL.Conner Mantz runs 2:05:04 to take fourth place at the Boston Marathon. That’s the second-fastest run by an American man on the course.

Battled and just missed the podium by four seconds. Still a lot to be proud of. pic.twitter.com/oiPgUua7bt

— CITIUS MAG (@CitiusMag) April 21, 2025

Linkletter, who held the lead at the halfway point, finished sixth in 2:07:02.

Young finished just behind him in seventh in 2:07:04.

Like Mantz, Linkletter and Young set new personal best times.