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.

A 2025 study of 60 professional runners found endurance athletes carry a fundamentally different gut microbiome from sprinters. Here is what the research means for recreational runners.