Kejelcha Runs 56:51 in Buenos Aires to Snatch the Half Marathon World Record Back From Kiplimo
Yomif Kejelcha ran 56:51 at the 2026 Buenos Aires Half Marathon to break Jacob Kiplimo's 57:20 world record. How the record finally fell in South America.

Running 5 miles every day sounds simple, but over a couple of months it reshapes your body and habits fast: early fatigue gives way to efficiency, hunger rises, weight loss may be slow, aches can signal overuse, gains plateau, and mental clarity grows.

Build endurance the smart way with 11 practical strategies: slow your pace, follow a plan, fuel and hydrate well, add cross-training and strength work, refine form, use warm-ups and intervals, and train your mind so longer runs feel easier and fatigue stays manageable.