Inside John Korir’s Training for the 2026 Boston Marathon
John Korir has had one hell of a year. He won the 2024 Chicago Marathon, and then he turned around and won the 2025 Boston Marathon. For someone who previously won LA in 2:09-2:12, ran Boston in 2:10, and ran Chicago in 2:05, it’s a big come up. From 2021-23, he was good. But in … Read more