In any long-distance run, from the half marathon to ultras, the winner isn’t the runner who looks the best right off the starting line, but the one who stays the strongest as the miles stack up.

Long runs are an essential part of any race-training plan, whether you’re prepping for your first 5K or your tenth marathon. The distance you rack up during these sessions may become daunting, but ...

For nearly six decades, East African runners have held an unchallenged position in long-distance running, dominating global competitions. Recently, experts Gerasimos V. Grivas, Borja Muniz-Pardos, and ...