I have the GPSMAP195 and it looks like there is no way to get altitude
information to be stored and then later downloaded as part of the track
information. The only way around it is to have a computer connected that can
download the data real time (NMEA). I checked the firmware upgrades which go
up to 3.01, but don't see any way to add this capability. Are the newer
GPS's like the 196 or 296 storing altitude information?

Sriram