Speed workouts are important for all runners, regardless of the distances they’re training for–even the marathon distance. The base of marathon training is long, steady-state running, but to maximize overall speed, even marathoners need to include interval or speed training in their routine.
But what does a marathoner speed workout look like? How often should you include them in your overall training? And how close to race-day should you back off doing speed workouts?
How to Make the Most of Your Marathon Speed Workouts | Active.com