You've been training for months and want evidence of your hard work. Here's how to test your pace, speed, and endurance at specific effort levels to accurately gauge your fitness progress.

Let’s travel back to the Paris Olympics—the women’s marathon event in particular. Twenty kilometers into the race, Sifan Hassan of the Netherlands was holding her pace and biding her time. “The moment ...

Hearing about a workout called a “fartlek” for the first time as a new runner might be intimidating and confusing. That’s because most terms, like “long run” and “speed workout,” are pretty ...

We all respond to and enjoy different types of training. Some of us love the feeling and thrill of going fast, while some of us shy away from the quick stuff and trust in our ability to endure. But ...

Explore a challenging ladder running session designed to improve speed, endurance, and overall training performance.

Perhaps the most often misunderstood concept of training is the role of aerobic endurance versus speed in racing success. It’s easy to think that not being able to race faster at shorter distances, or ...

While hill repeats have been a staple on the workout rotation for runners for decades, there actually hasn’t been much academic research on the training practice until relatively recently. A slew of ...

Sgt. Michael Crocker, a U.S. Army Reserve paralegal specialist with the 151st Legal Operations Detachment, headquartered in Alexandria, Virginia, from Woodbridge, Virginia, participates in a 100-meter ...

If you told high school me that I would one day run a marathon, I would have called you crazy. I wanted to believe it, but my cardio endurance was meh. A few not-so-quick miles on the treadmill felt ...

Should you go all out in bursts or settle in for the long haul? Experts explain which ride style helps you build more stamina in the saddle. Cycling intervals improve power, efficiency, threshold, and ...