(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 reckon my figures are pretty much bang on at 71m elevation at St Ninians and 35m at bottom of Bray Hill giving a 36m fall, I have double checked elevation at Brandywell with same system and I get 424m which is pretty much on the money.