Mile Time Reaches Plateau as Phase 2 Begins

Before a vacation to Key Largo, I made one last stab at a mile, running 5:28.5, about 0.7 seconds better than the previous 5:29.2. At least it was an improvement, but the curve (see graph above) indicates that I have potentially maximized my performance in the Phase 1 Training Program. Phase 2 has now begun! Let's define Phase 1 as Sub 5:30, and Phase 2 will target sub 5:20.