M18-39: Korir Seizes Boston in a Sub-2:05 Showdown

• John Korir wins in 2:04:45 (4:45/mi), taking the lead by 10K and never relinquishing it — the fastest finishing time in this race since 2019's edition data.
• Simbu and Kotut finish in an identical clock time of 2:05:04, but Kotut held 2nd for most of the race while Simbu — running the fastest closing split from 25.2M to the finish — swept past him in the final miles to claim 2nd by the slimmest of margins.
• Conner Mantz, the top American finisher, crossed 4th in 2:05:08 — just 23 seconds off the winning time in a field of 5,642.
• Muktar Edris ran the fastest 10K→15K split in the men's field and finished 5th in 2:05:59, anchoring a top five separated by just 1 minute 14 seconds.

John Korir was not messing around. After starting the race in 4th among the men, he had moved to the front by the 10K mark — and that was that. He ran the fastest 5K→10K split in the men's field to assert control early, and he never let go, finishing in 2:04:45 at a 4:45/mi clip. On a cool Patriots' Day morning in Boston — 50°F, light winds, low humidity — conditions were close to ideal, and Korir made full use of them.

Behind him, the race for 2nd was a study in contrasting strategies. Cybrian Kotut surged to 2nd among the men by 10K and held that position through 30K, running the fastest 15K→20K split in the men's field along the way. But Alphonce Felix Simbu — who was still 5th at the halfway point — was quietly hunting. Simbu ran the fastest closing leg from 25.2 miles to the finish in the entire men's field, reeling in Kotut in the final stretch. Both are credited with 2:05:04, but Simbu's relentless late surge earned him 2nd; Kotut held on for 3rd.

Conner Mantz was the story for American fans, running a controlled and gutsy 2:05:08 for 4th — including the 3rd-fastest 25K→30K split among the men. Muktar Edris rounded out the top five in 2:05:59, having run the fastest 10K→15K leg in the field before the pace differential caught up with him late. After 5th place, the next finisher — Rory Linkletter in 6th at 2:07:02 — was already a full minute back, underscoring just how sharp that lead quintet really was.