Remember that the treadmill accuracy is not exact either. In fact
Polar found the accuracy of most treadmills to be around 97-98%
accurate. So it doesn't mean it is the watch. A better test would be
to measure off a distance and run that distance to be sure of an exact
distance.

--- In niketiming@yahoogroups.com, "pro01232000" <acct_m_zaky@h...> wrote:
> Hi guys,
>
> I ran 2 miles on the treadmill with speed 13.4 km/hr, and had a rest
> for 2 minuites. I ran again 2 miles after the rest on the same speed,
> but on the data it shows slight difference between the two sessions.
>
> Anyway the speed shown in the data was 13 km/hr only which is not
> right.
>
> Does anyone experience the same problem?
>
> Best Regards...
>
> Mohammad Zaky, CMA