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 …

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 …

Jul 25, 2025 · Fartlek means "speed play" in Swedish, says Tucker Grose, a USATF-certified run coach in Denver, CO. And that’s exactly what it is: a fun, no-pressure way to add short bursts …

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.

A fartlek is a type of interval training that alternates between faster and slower running segments. Unlike traditional interval workouts, fartlek runs are less rigid, using effort rather than pace as …

May 29, 2025 · What Is A Fartlek Run? Fartlek runs are a type of interval training designed to blend speed and endurance work in a fun, flexible format. The concept originated in the 1930s, …

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 …

3 days ago · Today, we revisit one of our favorite episodes from the past year: how fartlek training – or “speed play” – can help you exercise more joyfully and more frequently.

Apr 22, 2025 · Fundamentally, fartlek is a type of unstructured speedwork. In a fartlek session, you vary between harder and easier running, but in contrast to intervals, there are no full rest …