If you're looking for a 20 week plan that will help build your base, your strength, speed, and efficiency at your goal pace, this plan is perfect for you. This plan includes 4 weeks of our tried and true Base Training, 4 weeks of our Hill Module, 4 weeks of our Speed Module, and 8 weeks of our Half Marathon Training Plan. One training plan to do it all. Quick Facts: -Length: 16-20 weeks -Runs per week: 3 -Key/Hard Workouts per week: 1 -Cross-training days per week: 1-2 -Garmin Structured ...