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.

When I was a student on my school’s track-and-field team, we had pretty regular access to the track, but as a recreational runner, securing the space is sometimes hard to come by. During half marathon ...

On the first day of the U.S. Olympic swimming trials, Katie Ledecky qualified for Paris in the 400-meter freestyle race. Ledecky is heading to her fourth Olympics after placing first with a time of ...