The half marathon is the ideal distance if you want to challenge yourself in training (and racing), without dedicating so much time to running that it feels like it’s eating up all your time ...

The workout, devised by The Body Coach app founder, Joe Wicks, is a 28-minute HIIT workout that uses a set of dumbbells.

And no matter what your experience level, specific 5K workouts, like the ones below, can help you up your performance, especially if you want to run faster. That’s because, in order to race fast ...

and improvements in maximum run speed and maximal uptake by [four to eight] weeks." The full effect of endurance exercise ...