Most running shoes have removable insoles since everyone's feet are different. The exception seems to be (1) inexpensive shoes -- to potentially reduce costs and (2) high-end lightweight racers -- to reduce weight. I have been able to run in these shoes without needing my aftermarket insole but haven't run longer distances for fear of creating problems for my feet. Today, I decided to take the insole out of my Razor 3. I want to use these shoes for more distances beyond 10K and there is little arch support in the glued insole. Slowly removing them was not too difficult, but I needed to take a screwdriver to the "glued" on foam that stayed in the shoe to make the interior flat. This worked well and I am trying my different remaining aftermarket and OEM insoles. Normal insoles seem to weight .5 to .6 oz. The heaviest insole was an ortholite insole at 1 oz. The removed insole weighed about .3 oz. That said, I will likely do this adjustment to my Reebok Forever Energy shoes. I won't touch my Nike Vaporfly though.
So, it seemed obvious today that the pod was still off. It seems to be reading short of the intended distance based on 7 mile circuit and initial readings on my 11 mile run today. I feel like .20 miles short on 7 miles. So .0286 miles off per mile. Current calibration is 99.3. Reset to 100. Current calculations indicate 102.25
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