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.

Before GPS watches, runners relied on time-based training or rough distance estimates. Now, with data at our fingertips, this old-school method may seem outdated, but it holds surprising benefits. Let’s dive into why training by time can revolutionize your running.