I use a GPSMAP 62s for backcountry navigation. A few months ago, I hiked a section of the John Muir Trail, using routes that I created in BaseCamp. I used BaseCamp's 'calculated route' feature-- I entered waypoints for each day's starting and ending points, and then let BaseCamp calculate the route along the JMT, which is shown on my Garmin map set. With the activity profiles in both BaseCamp and the 62s set to 'Hiking', the route followed the trail as expected on my 62s.
Here's my problem: The distance and ETA calculations on my handheld were grossly inaccurate. What I think happened is this: While the 62s was displaying my route as following the trail, it was calculating distance and ETA as a straight line, as-the-crow-flies vector between my starting and ending point. In other words, the display was following the trail, but the distance and ETA calculations weren't.
So, my question is: Has anyone else come across a similar problem? I understand that a lot of people use tracks instead of routes, but that's not what I'm asking. So, please don't respond to tell me that, or to tell me to use some app other than BaseCamp. Thanks for your help.
