..It was a difficult and a very long decision making process for the paragliding officials to do away with the GPS altitude.  GPS altitude has always been used to verify the altitudes in paragliding competitions and it has all to do with the roots of where paragliding is coming from.  Recently however many GPS altitude related controversies have convinced the CIVL to re-consider using pressure altitude rather than the GPS altitude to improve reliability and accuracy of the measurements…

GPS Altitude vs. Pressure Altitude