I would like to be able to customize the scale of the Pace part in each Activity of running. For instance, I want the scale to be from 8:00/mile to 10:00/mile so that my pace, faster or slower, is more obvious. Is that possible?
Click the double-arrow symbol top right on the graph to get the large view, and the you can use your mouse to select the area of interest, which will be then zoomed in. Although you cannot change the vertical range, you can adjust the horizontal one. Anyway, in the large view, you won't have the need for changing the vertical scale.