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middle distance articles
4 articles on middle distance, newest first. Every one is sourced and links to the calculator it applies to.

How Faith Kipyegon Trains (the 1500m Record-Holder From Kipchoge's Camp)
Faith Kipyegon holds the 1500m and mile world records, trains in Kipchoge's Kaptagat camp under Patrick Sang, and got faster after becoming a mother.

How Cole Hocker Trains (One Engine, From the Mile to the 5000)
Cole Hocker is Olympic 1500m champion, world 5000m champion and the second-fastest indoor miler ever. How one number predicts your pace at every distance.

How Sifan Hassan Trains (One Engine, From 1500m to the Marathon)
Sifan Hassan medals from 1500m to the marathon. The range behind it, and how one race result predicts your time at every other distance.

How Josh Kerr Trains (and How He Finally Broke the Mile World Record)
Josh Kerr ran 3:42.66 on 18 July 2026 and ended a 27-year-old mile world record. The training and pacing behind Project 222.