Dec 8, 2020 · Fartlek is literally, playing around with speeds—essentially, it’s a form of unstructured speedwork. Unlike tempo and interval work, fartlek is completely unstructured—which means you …

Fartlek Fartlek is a middle and long-distance runner's training approach developed in the late 1930s by Swedish Olympian Gösta Holmér. [1]

What Is a Fartlek Run? A fartlek run is a type of running workout that involves running continuously at varying paces. It challenges your body to adapt to various speeds, conditioning you to become faster …

Aug 27, 2022 · Fartlek — Swedish for “speed play” — is basically organized chaos. No stopwatch. No lap splits. Just you, your surroundings, and some good old-fashioned bursts of speed. You might …

Jun 14, 2025 · Fartlek training, a Swedish term meaning “speed play,” is a type of run which involves continuous running at varying paces, mixing intervals with sustained efforts.

Sep 11, 2023 · Fartlek is a Swedish term that translates to ‘speed play,’ and so it literally refers to playing around with different speeds and paces, and is essentially a form of unstructured speedwork.

Jun 2, 2025 · Fartlek is a Swedish term meaning “speed play,” and it helped take the nation’s cross-country success to whole new levels decades ago. Now, athletes and everyday runners around the …