Find Your Elevation

The elevation calculation on your Garmin uses barometric altitude. Leaving from home on rides, I have seen my starting point vary by as much as +/- 100 feet.

A great way to make this more accurate is to enter a starting elevation. First you can find your starting elevation here:

http://www.daftlogic.com/sandbox-google-maps-find-altitude.htm

Then enter a new elevation point on the Garmin by pressing Menu > GPS > Set Elevation and follow the prompts.

Next time you start from that point, you will see an additional dialog when you press Start on your Garmin 500: "Elevation Point Found". 

Note to my fellow Colavita Riders: The starting elevation of the Deerfield train station lot is 673 feet.