Good morning guys, I continually read about CFIT (controlled flight into terrain) Before I do a distance flight I use Google Earth to determine ground elevation of my intended route. For example; From my driveway I fly north approx 2 miles at 400' AGL, Ground elevation rises approx 60', at the turnaround point my altitude is 340' AGL. When I fly East ground elevation drops 130', I start my flights going east at 270' , at the turnaround point my altitude is 400' AGL this keeps me in compliance with the 400' AGL rule. If I were to fly west the same 2 miles ground elevation rises 410', Looking west ground elevation does not appear to rise that much... But google earth tells me it does. Google Earth is your friend.