John Korir wins 2nd straight Boston Marathon in course record time - ESPN

BOSTON — Defending champion John Korir broke the Boston Marathon course record Monday, riding a tailwind to outrun the strongest field in event history and win in 2 hours, 1 minute, 52 seconds — the fifth-fastest marathon of all time.

The Kenyan broke away from the pack as it headed into Heartbreak Hill in Newton and opened a 40-second lead, peeking behind him as he went through Kenmore Square with a mile to go.

He beat the 2:03:02 set by Geoffrey Mutai in 2011 by 70 seconds. Kelvin Kiptum holds the marathon world record, with a 2:00:35 on the flatter Chicago course in 2023.

Korir stuck out his tongue and spread his arms as he ran down Boylston Street, a year after he joined 2012 winner Wesley Korir as the only brothers to win the race.

Alphonce Felix Simbu of Tanzania, 55 seconds back, and 2021 champion Benson Kipruto, another 3 seconds behind him, were also fast enough to better the previous Boston record. Zouhair Talbi, who competed in the 2024 Paris Olympics for Morocco and became an American citizen last year, was fifth in 2:03:45, which was the best time ever for a U.S. runner.

The athletes arrived in Hopkinton with frost on the ground and temperatures in the 30s. It had warmed to 45 degrees (7 degrees Celsius) by the start — the coldest starting temperature since 2018 when it was 38 degrees combined with a headwind and driving rain that led to the slowest winning times in more than 40 years.

But the clear skies and slight tailwind on Monday had the field, the fastest in the 130-year history of the world's oldest and most prestigious annual marathon, expecting fast times for the second year in a row.

Jack Fultz, who was serving as grand marshal on the 50th anniversary of his «Run for the Hoses,» said the weather