Originally Posted by
CdCf
GPS doesn't come close to the accuracy of a properly calibrated computer.
By all means, use your GPS to find your way, if you're in unfamiliar areas, but use a computer for speed and distance!
Current GPSRs that are waas enabled with SiRF III are 99% accurate. I've been using a Garmin Forerunner 305 5-6x week since december and the data is always reliable. My previous Forrunner 201 without SiRF III chipset had nowhere near this accuracy as it consistantly lost signal in tree cover. Same deal for my old magellan 315 handheld.