Fartlek is a Swedish term that means “speed play” and was popularized by Swedish Olympian and master-coach Gosta Holmer. Holmer coached Gundar Hagg and Arne Andersson to within less than 2 seconds of the magical 4-minute mile as far back as the 1940s. Both set world mile records, with Hagg’s being the fastest at 4:01.4 until Roger Bannister’s recording-…
Fartlek Workouts for Runners - Simple Sessions to Make You Faster
