(25-06-2015, 11:31 AM)SILJA Wrote: I've tried it and I'm a little confused. The figures I get is that the distance between the Ballanard Road crossing at the gaz station and the Tromode Road crossing is 0,35 miles or 563 metres. (Measured with on board computer.) The difference in elevation between these points is 125 feet or 38,1 metres. (The graph measures.)

Please as you seem to know a lot about this, what are your figures?

I get 128ft as the lowest point is just after Tromode rd. Also we have to allow for how this was measured as most GPS systems are only good to 1<5mtrs for good ones and 10mtrs or more for average ones with a good signal and with heights even worse!