Running on a treadmill or outside offers similar fitness benefits—learn which feels harder, when to choose each, and how to start training consistently.

If you follow these tips, you might find yourself looking forward to your indoor treadmill runs rather than dreading them.

I recently decided to completely switch up my half marathon training. I swapped miles for time-based training runs, and because I’ve never been much for speedwork outside my high school cross-country ...

Getting some miles in on your feet has a ton of benefits. Previous Prevention reporting found that running can lower blood sugar, boost cardiovascular health, build muscle, support healthy bones, and ...

Treadmill workouts are a fantastic way to get running sessions in, whether you're marathon training or just looking to improve your cardiovascular fitness while swerving uncooperative weather.

When it comes to running, few debates divide fitness enthusiasts as sharply as the one between outdoor tracks and treadmills. Both promise endurance, calorie burn, and mental relief—but which one ...

Here at Runner’s World, we love nothing more than trying the latest and greatest shoes, tech, and apparel. That’s why we do so much research and gear testing each year. We only recommend products that ...