Experts share the best types of interval training to help you improve both as a long-distance runner and an all-around athlete.

Polarized training is based on a clear 80/20 distribution: 80% of your training at low intensity (max HR 65–75%) and 20% intense (at or above the anaerobic threshold), while the middle zone is largely ...

At 17, Winnie Yu was a high school track-and-field runner with a bright future. When Yu’s parents encouraged her to try sports in middle school, they didn’t expect she’d fall in love with ...

Finally, after many years of trying, middle-distance runner, Erin Wallace, won her first senior outdoor cap last year. And now, she's looking ...