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RE: ARTHUR LYDIARD OR JACK DANIELS?
DRF plan for 5k-15k has four 6 week blocks. The first is base building with strides. The second focuses on reps (mile pace) as the primary and threshold as the secondary quality workouts. Reps use full recovery so they are not that stressful. I think the most stressful block is the third which uses VO2max intervals (3k-5k pace) as the primary quality workout.
The two systems are not identical, but they are similar. Also, don't just go by the published schedules. The text explains variations on the theme (e.g., DRF schedule doesn't mention hills for the second block but the text does). A schedule is only a guide, not a commandment written in stone. Understand your body and adjust.
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