How to Do Fartlek Runs (and Seven Different Kinds to Try)
via lifehacker.com
Short excerpt below. Read at the original source.
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? Probably a lot less than the number of people who talk about doing them. The original […]