Is there still snow on the ground? Perhaps for some of us. Is the temperature near freezing? Probably. Will you need to wear a balaclava while you’re running? Most likely. But are we solidly in spring ...

Interval running condenses the powerful effects of regular running into shorter, high-intensity bursts. Research shows it can improve cardiovascular health, regulate blood sugar, and reduce body fat ...

‘This type of interval training is effective because it trains both your body and your brain,’ adds Pace-Humphreys. ‘You’ll ...

I used to take lots of shortcuts when training for a race. Often those shortcuts involved brief interval sessions and hill sprints, and very few long, slow and steady runs. My theory: the faster I ...

This interval-based walking technique can help to enhance your strength, aerobic fitness and resistance to illness and injury ...

Here’s an example. Running an ultra marathon requires endurance, because the goal is to maintain a steady pace for several ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. I used to train with a group that ...

Our Sub-3:45 marathon plans, encompassing five to six runs per week, are aimed at experienced runners who are regularly running a minimum of four times per week. 3-4 runs per week Our Sub-3:45 ...