Train to increase your speed in four weeks with a mix of interval workouts, easy runs, and long runs—all of which you can do ...

Here are our top picks. One minor downside: Ookla displays banner ads while you run basic speed tests. It's not a huge deal, although it might slightly impact your results, depending on the ...

It was a hot summer afternoon on Cold Soil Road, and I had just finished the “First Speed Run,” a guided run in the Nike Run Club app. It included eight one-minute inter­vals interspersed ...