Quick Facts: -Length: 8-12 weeks -Runs per week: 4-7 -Key/Hard Workouts per week: 1-2 -Cross-training days per week: 1-2 -Garmin Structured Workout Compatible -McMillan Calculator paces integrated into all workouts Plan includes: -Tried and true, scientifically-based and proven marathon workout sequence -Goal pace predictor workouts to dial in your goal pace -Progressive long runs to increase your endurance -Stamina-boosting marathon specialty workouts -Predictor workouts to determine your ...