I always give it a few minutes after supposedly finding satellites to calm down. Have a look at some of my traces from Jacobs a few weeks ago when I just went as soon as it acquired them!
yeah but over 1.5km out seems a bit drastic
Yeah it does a bit. Even the City to Surf last year only put me 240m over. I had turned the GPS on an hour before the start but we think the buildings interfered with the reading.
yeah but 240m on 12km run is 2% which would be within a tolerance I would expect - and if you did a longer distance then its definitely fine.
My variance is 5.5% thats starting to be significant.
So it's not within budget parameters?
Maybe it's your old chain that's causing the discrepancy. If it's stretched to 1.0, that'd probably add around 5% to your distance.