“Unlike a 5k, in which you try to maintain a low tempo pace for a continuous run, in fartlek training there’s going to be short bursts of speed.” For example, you might run for two minutes ...

A typical interval workout might be 8 x 400m reps at 5K pace, with recoveries lasting the duration of the rep. Fartlek workouts are a great way to introduce faster or more intense running into ...