Stop running your easy days too hard and your hard days too easy. Tackling 100 miles requires safely building a massive aerobic engine without injury. Designed specifically for novice runners or those looking to step up their volume safely, this 26-week plan uses the proven 80/20 Endurance methodology. You will build specific muscular endurance, time-on-feet, and lactate clearance to conquer 100 miles with confidence. What It Delivers: Exact Zones: A Day 1 baseline test establishes your ...