fartlek

Etymology
Borrowed from, from (ultimately from ) +  (ultimately from ).

Noun

 * 1) An athletic training technique, used especially in running, in which periods of intense effort alternate with periods of less strenuous effort in a continuous workout.

Translations

 * Finnish: vauhtileikittely
 * German: Fahrtspiel
 * Hebrew: אימון פארטלק
 * Japanese: ファルトレク
 * Lithuanian: fartlekas
 * Russian: фартлек
 * Serbo-Croatian:
 * Roman: fartlek
 * Swedish: fartlek