Odometer

Hi all,

I have a question about Odometer:

this should be the TOTAL amount of distance since the first use of the device, and its not resettable (almost)  

The problem is that if I move with the car to get to my trekking destination and then I switch the unit on...the Odometer increase with the amount of distance that I just did by car  

is there a way to avoid this?

That would be good to have only the real walking distance since the first use

Thanks for help