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.

Long runs can be the most rewarding part of training, but a few common mistakes can turn them into a slog. Learn how to pace yourself, fuel and hydrate consistently, avoid untested gear, time workouts and meals wisely, dress for changing weather, and resist adding extra mileage.