Thread: Race Report: 5K
View Single Post
Old 08-11-2008, 09:20 PM   #9
SteelBlue
Senior Member
 
SteelBlue's Avatar
 
Join Date: Aug 2005
Location: Norcal
Posts: 5,821
SteelBlue is an unknown quantity at this point
Default

Quote:
Originally Posted by bigpiney View Post
Well, I have known it has been off for a while, I just haven't done anything about it.

I know that it is about a tenth of a mile off or so. There is a run from my house that is 2 miles to a bridge and when I get out there it usually reads around 1.85. I think it is more of a function of having moved the sensor to different shoes and they may not be laying where they used to in relation to my foot.
I'm pretty sure it has to do with steps per mile. When you calibrate, I think it calculates an average steps/mile for you and when you run faster than that pace, you take fewer steps/mile thus the iPod thinks you haven't reached your mile yet. It's just a theory, but it makes sense to me. I've noticed when I run recovery runs I get too much credit for mileage which would fit with my theory as well.
SteelBlue is offline   Reply With Quote