Most solid training plans include a weekly speed workout, often in the form of intervals. But the length of those intervals usually depends on your race distance, training goals, and fitness level.

We love 400-meter repeats for a few reasons. For starters, runners of every distance can benefit from this straightforward workout. Whether you’re training for a 5K or marathon, 400-meter repeats are ...

Running at the best of your ability is somewhat of a numbers game. To hit new PBs, you’ll want to keep tabs on all kinds of stats, like distance covered, pace per mile (or interval), max heart rate, ...

Running to the best of your ability can feel like a numbers game. To hit new PBs, you’re probably under the impression that you should keep tabs on all kinds of ...