Fartlek

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How to Do Fartlek Runs (and Seven Different Kinds to Try)

Fartleks are a well-known and popular running workout—or at least they’re something runners talk about all the time. But how many of us have gone out and said “I’m doing a fartlek today” and actually followed through with it? The original idea is that the workout is unstructured (the name means “speed play”) so it’s hard to plan one. Here’s…