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Elite Runners

A Closer Look at John Korir’s Boston Build: Workout Details

June 7, 2025 by Brian Rock

Last week, I wrote up a summary and analysis of John Korir’s training for the 2025 Boston Marathon. He has a public Strava profile, so it’s all out there for someone with the patience to comb through it. One thing that I wasn’t able to see previously, though, was the details of his Tuesday workouts. … Read more

Categories Running Data Tags Boston Marathon, Elite Runners Leave a comment

Inside John Korir’s Training for the 2026 Boston Marathon

May 31, 2025 by Brian Rock

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

Categories Running Data Tags Boston Marathon, Elite Runners, Marathon Leave a comment
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Recent Posts

  • Why Does the US Olympic Trials Qualifying Time Keep Going Lower?
  • A Closer Look at John Korir’s Boston Build: Workout Details
  • The Full Boston Marathon Cutoff Time Tracker Dataset
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  • Inside John Korir’s Training for the 2026 Boston Marathon

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