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CardioTrainer vs MapMyRide - Altitude?

Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

CardioTrainer vs MapMyRide - Altitude?

Old 07-30-09, 07:13 PM
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CardioTrainer vs MapMyRide - Altitude?

So a few days ago I downloaded CardioTrainer for the g1 phone. Said program uses GPS to track stats of rides and can post them on their website, publish to Facebook whatever. At first I didn't use the website to look up statistics of rides and simply would come home, go on MapMyRide and, well, map my ride to find the altitude statistics. This was all dandy until today when I realized CardioTrainer also gives altitude information. Interestingly enough, both also use Google maps in the background. However, upon comparing today's ride information between the two websites, CardioTrainer reported a 285m (935ft, user calculated as the website reports this statistic in meters for some reason) altitude gain and MapMyRide reported ~558ft. (Oddly enough, I also found ascent info in the CardioTrainer program on the phone, which said that ride was 790ft of climbing O_o) I also checked the info from my previous few rides which I used CardioTrainer on and saw similarly comparable and grossly different ascent reports.

While I'm sure people on the forum have used MapMyRide, has anyone used CardioTrainer and if so seen such inconsistencies? Does anyone have a clue as to the accuracy of MapMyRide? (Or CardioTrainer?)
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Old 07-30-09, 09:26 PM
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I have never heard of CardioTrainer.
MapMyRide is terrible for cumulative elevation gain.
If your GPS is accurate, I would trust that much more than MapMyRide.
However, a barometric altimeter should be significantly more accurate than a GPS altimeter.
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