The Strength in Stride program is designed to flow with your 16 week run training plan. There are four phases in Strength in Stride: The Stability phase (5wks), which you start when you begin a new race training plan. The Strength phase (5wks), which you use in the middle of your plan. The Power phase (5wks), which flows with your race-specific and peaking run phases. Down Week (1wk) leading into your race. Strength train AFTER running - either immediately or later in the day.