Pedometer

[ttrap]

I have a cheap pedometer that counts steps, distance, and calories used. Trying to get some help setting it up for running. I used google maps and calculated the distances for the area I run and walk. When I use the pedometer and walk it is spot on. But when I run it says I'm covering half the distance? Any ideas what I need to do to set it up to calculate that properly for running?
Thanks all

[Zhaga]

I think it's not the problem with setting up ..it's the problem that it is a cheap one. I don't have any problem with ..so