M40-44 at Boston: Chelanga Dominates a Deep Field

• Sam Chelanga took the M40-44 title in 2:14:59 (5:09/mi), finishing more than a minute and twenty seconds clear of runner-up Esteban Trujillo's 2:16:19.
• The top four all broke 2:18:00, with Ser-Od Bat-Ochir third in 2:16:41 and Tiidrek Nurme fourth in 2:17:22 — a tight cluster separated by just 1:23 across three positions.
• Sean Swift (5th, 2:22:57) was the M40-44 field's biggest mover in the back half, climbing from outside the top 100 men to 91st among men by the finish on the strength of the 46th-fastest men's split on the 24M–40K segment.
• Ninth and tenth place — Ivan Shabalin (2:25:54) and David Cisewski (2:26:00) — were separated by just six seconds across 26.2 miles.

Sam Chelanga ran the kind of race that makes a result look inevitable in hindsight. Clicking off miles at 5:09/mi on a cool, breezy Boston morning, he held a commanding lead from start to finish and crossed in 2:14:59 — a margin that left no doubt about who owned the M40-44 age group. Esteban Trujillo pushed hard at 5:12/mi to claim second in 2:16:19, while Ser-Od Bat-Ochir was right on his heels in 2:16:41. Bat-Ochir had shown early aggression, posting the 43rd-fastest men's split on the 5K–10K segment, but Trujillo's strong 20K–half stretch — the 42nd-fastest men's split there — helped him hold the gap.

Tiidrek Nurme rounded out the podium's extended top four in 2:17:22, finishing with the 47th-fastest men's split on the final 25.2M-to-finish stretch — a strong close that sealed fourth. The real gap in this race opened between Nurme and fifth-place Sean Swift, whose 2:22:57 trailed Nurme by more than five and a half minutes. But Swift's story was one of relentless forward momentum: he entered the 24M mark well outside the top 100 among men and kept grinding, ultimately finishing 91st among men with a top-50 men's split on that late stretch.

Behind Swift, positions six through twenty were a genuine gauntlet. Juan Luis Barrios (6th, 2:24:16), Aaron Metler (7th, 2:24:45), and Nico De Vries (8th, 2:25:14) were packed within a minute of each other, and the Shabalin-Cisewski duel — six seconds across the entire marathon — was one of the tightest head-to-heads in the age group. The field of 2,198 M40-44 finishers made this one of Boston's most competitive cohorts, and the depth through the top 20 — everyone inside 2:30:10 — reflected just how fast the day was for this group.