Frustratingly, walking downhill speeds you up lower than an uphill slows you down. So even though your route might have equal uphills and downhills, a hilly route will always be slower than a flat one. How quick you are ready to walk a mile is dependent upon your age and your health. I grew to become very annoyed with my weight and my lack of ability to “shift it.” I knew exercise would help so I put my gray cells…