-6 x 800m, or 8-12 x 400m at your VO2max pace. Take a two- to three-minute jog recovery between each repetition.The idea behind this kind of interval training is that you can safely go up to or beyond your maximum capacity of 11 minutes of VO2max
, enjoyable (and effective) way to run. It’s worth a try, isn’t it? Amby Burfoot is Editor of Runner's World US.