Most runners keep tabs on their mileage, documenting—sometimes obsessively—exactly how far they run every day, week, month, or even year. Beyond serving as a brag-worthy stat, how many miles you run, ...

Do you want a 2% grade? How about 8%? Here's how to measure that hill, find one near you, and get a good workout on it. Hill repeats are a great training tool if you’re a runner, or if you’re any kind ...

Many runners analyze every aspect of their performance to find and fix the smallest faults. And expert guidance often centers around correction—how to fix bad form, poor pacing, or other bad habits ...