This Marathon Training plan is designed for one of the fastest marathons in the USA: Houston Marathon. Quick Facts: -Length: 10-16 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 -Geared towards the Endurance Monster type of runner Weekly mileage = 55-80 miles per week (90-130 kilometers per week)* *based on an average training pace of 7:00 min/mi (4:20 ...