MFR 154: Fun with Fartlek Training
Any runner or group of runners, of any level, can make up a fartlek workout on the fly or pull out one of the traditional, popular fartlek workouts. Fartleks are especially good for injecting a bit of speed work into a long-ish run during the basebuilding phase when it’s best to avoid track workouts, to save them for later in the cycle when the speedwork needs to be more specific, more race oriented.