For developing aerobic capacity and improving running efficiency, it’s hard to beat the fartlek session.
Devised by Finnish coaches in the 1930’s, it’s become a mainstay of competitive runners and triathletes everywhere.
Unlike typical intervals, where it’s common to stop between efforts, fartlek workouts blend a variety of nonstop efforts to challenge multiple energy systems in one extended session.
Olympic coach Ben Bright thinks fartleks are ideal for triathletes, because they require you to run well when fatigued… Just like after getting off the bike during a race. Give his favorite fartlek workout a try and you’ll quickly understand the power of this classic session.