noun. a method of athletic training (especially for runners) in which strenuous effort and normal effort alternate in a continuous exercise.
Example sentences of the word fartlek
1. Noun, singular or mass
The captain’s run is a type of fartlek running game that uses a whistle to tell runners when to speed up 1.
When you want to finish faster, training for speed is incorporated into your weekly workout sessions with tempo, interval and fartlek training.