The men’s professional field takes off from Hopkinton. PHOTO/JERRY SPAR

John Korir of Kenya broke free from a pack of runners at Mile 20 and pulled away to win Monday’s 129th Boston Marathon in 2 hours, 4 minutes, 45 seconds. His older brother Wesley Korir won the race in 2012, making them the first siblings to be Boston champions.

Korir overcame an early fall during which his front bib fell off (he kept it in his shorts and pulled it out just before the finish).

Alphonse Felix Simbu of Tanzania edged out Kenya’s Cybrian Kotut for second. Both posted a time of 2:05:04. Utah’s Conner Mantz was in a group of three battling for second in the final mile but fell to fourth. His time of 2:05:08 was the second-fastest marathon by an American anywhere.

Sisay Lemma, the 2024 champion, was among the leaders Monday before he stopped around Mile 17 with an apparent leg issue.

Women’s pro runners leave for Boston. PHOTO/JERRY SPAR

On the women’s side, Sharon Lokedi held off Kenyan countrywoman two-time defending champion Hellen Obiri, winning in a course-record time of 2:17:22. Obiri finished 19 seconds behind (2:17:41), with Ethiopia’s Yalemzerf Yehualaw (2:18:06) in third.

Americans Jess McClain (2:22:43) and Annie Frisbie (2:23:21) finished seventh and eighth.

Men’s wheelchair participants embark on their marathon journey. PHOTO/JERRY SPAR

On the 50th anniversary of the first official wheelchair finisher, Switzerland’s Marcel Hug won his eighth Boston, finishing in 1:21:34. American Daniel Romanchuk was second in 1:25:58.

American Susannah Scaroni, the 2023 winner, won the women’s wheelchair in 1:35:20. Catherine Debrunner and Manuela Schar, both from Switzerland, took second and third, respectively.

Women’s wheelchair athletes head out from Hopkinton. PHOTO/JERRY SPAR