4 Biggest Half-Marathon Training Mistakes and How to Avoid Them

Just starting a half-marathon training program? Here's how to avoid the most common half-marathon training mistakes and make sure you're ready come...

By Michael Clarke

Infographic: How Many Calories Does an Endurance Athlete Burn

This infographic will show you just how many calories you're expending on the road, on the bike or in the open water.

By Michael Clarke

Quiz: Do You Need a Running Coach?

Take this quiz to find out whether you could benefit from the guidance a running coach can provide; you might be surprised about what you learn.

By Sabrina Grotewold

3 Newbie Keys to Training for a Half Marathon

Here are three keys that will ensure you're ready for race-day success.

By Michael Clarke

3 Workouts to Increase VO2 Max

Increase your heart's ability to pump blood and oxygen to your muscles and your fitness will improve. Try these three long intervals designed to in...

By Jason Karp

3 Tips for Transitioning to Trail Running

Trail running differs from road running in several ways. Here's what you need to know before you hit the trails.

By Jason Karp, Ph.D.

When it Is Good to Gain Weight

Should runners try to maintain their ideal racing weight in the off-season? Matt Fitzgerald discusses the pros and cons of gaining weight after a p...

By Matt Fitzgerald

7 Safety Tips for Running in the Dark

Whether you choose to run early morning or late evening, there are some elements you should be aware of when running in the dark.

By Karen Janos