Aerobic capacity, not speed, is usually the limiting factor in how fast you can race, even for a distance as short as the 5K.

Chances are pretty good that you've experienced at least one of these "injuries." Yes, you can run through them.

Fine tune your training efforts by learning the specific ways each type of workout — steady state, tempo, VO2 max — should feel.

Alternating running and walking is nothing to be ashamed of—it's a great way to build fitness and prevent injury.

After months of training and 26.2 miles of racing, recovery should be your key concern.

When you're going long and easy, running slower produces all of the benefits, and leaves you fresh for the training week to come.

The rest you take between repeats is as significant as the fast portions of an interval workout. Modifying the length and speed of your recoveries provides infinite training options.

Adopting a longer and more flexible training schedule can maximize each workout and reduce the risk of running injury.

How explosive plyometrics will make you a faster runner, and nine exercises to build your bounce

More than half of all athletes will overdo it at least once in their running career. Use these tips to recognize subtle signs that you're approaching overtraining.

A six-week guide to workouts that build the specific strengths and skills you need to crush your next 5K or 10K

The goal of endurance training should be to improve the ability to clear lactate from the blood. Here's how.

The pros and cons of doing speed work on the track and on the road, and why you should mix in some of each

The strongest muscles in the world won't help if they're not activating properly during the running stride

How runners can optimize their time and training during a short-term trip to altitude

Learn how to specifically target different muscle fiber types in your training.

No fancy equipment needed — just your finger, a notebook and one minute a day

The pros and cons of training by time or training by distance

Marathons have a special allure, but the demanding distance isn’t for everyone.

Can't run? Keep your legs moving in the pool and maintain fitness while you overcome injury.