How to Train for a Race

If you're doing a 100 miles that base is established, you might want to start with short intervals because those are important for your overall fitness. And then after you spend some time developing that, you can move on to the next least specific thing and just work your way closer to goal race intensity. So if you're wondering about how long to spend in these intensities, really you're looking at about four to six weeks in terms of real adaptations actually setting in from these workouts.