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#11
May 5th 05, 06:14 AM
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Pete Salomone wrote in news:EJ7ee.734$d16.710
@newssvr31.news.prodigy.com: Is there some way to prove how much TopoUSA overestimates? With the St Atlas program the route comes up longer than the line that represents the route on the map. Easy to prove by directly measuring the route with an altimeter. The error can be anywhere from 50% to 200% depending on the route. I don't think any club uses DeLorme for cumulative altitude gain. At least for the centuries I've been on, the advertised gain is pretty close to my altimeter's reading (much less than DeLorme). 
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#12
May 5th 05, 05:27 PM
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I have seen lots of event rides that use DeLorme data. I rail against
it for two reasons; it scares off those afraid of climbing, and it makes those who are willing to try a bit overconfident at times. - rick
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