It seems like we wait all winter long to enjoy an outdoor run. A week of glorious running passes and suddenly it’s already too hot to handle running outside, even at 5 am. Escape the sweltering summer temps with an indoor treadmill run instead. Try one of these fun workouts to keep boredom at bay, and up the intensity while you’re at it.
Click the links to visit the original source of each workout and to find more workouts to try this summer!