Stop running your easy days too hard and your hard days too easy. Most Airmen prep for the 1.5-mile PFA with "junk volume"—sprinting daily. This causes shin splints and plateaued times. Built by a 21-year veteran and former UFPM, this 12-week plan uses the 80/20 Endurance methodology: 80% easy aerobic base-building (Zone 2) and 20% math-driven VO2 Max intervals to safely max your score. What It Delivers: • Exact Zones: A baseline test establishes your precise HR/pace zones for the next 12 ...