Originally Posted by
Iride01
Didn't say specifically that it would. My comment was just an add to one of the many reasons why GPS mileage might be not what we expect.
You are exaggerating the amount of distance lost. There shouldn't be much difference (so, the number should be fairly close to what is expected).
Originally Posted by
Iride01
I didn't know I was supposed to give the reason for the most error.
If there's a large difference, the thing you talked about isn't likely to be the cause. If so, talking about it wouldn't be relevant to the OP. The "reason for the most error" would be (which is why people need to "give it").
(We still have no idea what the "real" distance is.)