3 ms·"speed" in Swedish and Norwegian. Probably Danish as well.by pmdr 4mo ago"speed" in Swedish and Norwegian. Probably Danish as well.firefax 4mo agoah, makes sense, thank you.bookofjoe 4mo ago>A fartlek (Swedish for "speed play") is an unstructured, continuous running workout that mixes fast bursts of intense running with slower, recovery jogging.