Stop running your easy days too hard and your hard days too easy. Most new runners prep for a 5K with "junk volume"—running at a moderately hard pace every single day. This causes shin splints, burnout, and plateaued fitness. Designed specifically for beginners and those returning to the sport, this 12-week plan uses the proven 80/20 Endurance methodology: 80% easy aerobic base-building (Zone 2) and 20% math-driven intervals to safely build your engine and get you to the starting line healthy. ...