For the past eight weeks, I have been running longer every weekend than I ever have before. I’ve improved my endurance, overall fitness, and even my confidence. Now that I’ve proven to myself I can ...

(CNN) — A 16-year-old from New Zealand has set a new world record for the fastest mile run by an under–18 athlete. Sam Ruthe crossed the finish line in an extraordinary 3:48.88 minutes at the John ...

Track prodigy Sam Ruthe “didn’t expect” to break a world record. The 16-year-old New Zealander set a new record for the fastest mile by any under-18 runner in history with a time of 3:48.88 at Boston ...

When the opportunity to run the 5th Avenue Mile in New York City came around this year—they have a media mile in which Runner’s World editors can participate—I had already been about six weeks into ...

Most people overestimate how many calories they torch while running. Here’s how to figure out your numbers—and tips to boost ...