Austin Texas 30 269710N 97 738270W 30 242450 N 97 763250W 9000 Longrun Tracks Overlay2.Thumb Tony writes “I managed to write a perl script to do the Garmin GPS Overlay on an arbitrary satellite image. You can get ridiculously high resolution, color satellite orthoimages from seamless.usgs.gov, and then overlay the tracks on the image with PerlMagick. My PerlMagick script to do this is here“. I use the same GPS Tony has, the Garmin Forunner- nice work! Link.