Foundations covers the fundamentals of fartlek training, including what fartlek means, how fartlek works, where it came from, and how it compares with tempo runs and interval training. These guides are designed to help runners understand the method before applying it in workouts and training plans.
The 10K is short enough to hurt and long enough to break you if you go out too fast. Fartlek training builds the sustained speed and lactate threshold fitness the race demands — with six workouts that take you from aerobic foundations all the way to full race simulations.
Learn how long a fartlek workout should be for beginners, general fitness, and more advanced runners, with practical guidelines that make pacing and duration easier to judge.
Learn how fast to run during a fartlek workout, how hard the surges should feel, and how to pace recovery without blowing up.
Learn how to do your first fartlek run with a simple step-by-step guide for beginners, including pacing, recovery, and common mistakes.
Learn whether fartlek and HIIT are the same, how they differ, and when runners should use speed play instead of HIIT.
Fartlek and tempo runs train different things. Here is a clear breakdown of how they differ, what each one does well, and when to use which in your training.
Fartlek and interval training are not the same thing. Here is a clear breakdown of how they differ, what each one does to your body, and when to use which.
Fartlek is a Swedish word meaning speed play. Learn the correct pronunciation, the full origin story and why the word sounds the way it does in English.
Fartlek means "speed play" in Swedish — and it's one of the most effective training methods in running. Learn what fartlek is, how it works, and how to start today.