Those of you who read Google Earth Blog know I have a passion for recreational flying and have posted GPS tracks of flights (see examples here and here). Dave Morrissey wrote me to inform me about his goFLYING web site which allows you to upload your GPS flight logs and display them on either Google Maps or Google Earth. Here are some examples of flight logs, and here is an example of a single flight log 
for GE.
One thing I like about David’s implementation is that the flight logs show colorized-by-altitude fenced tracks in 3D, which is a feature GPSVisualizer can do as well. Also, goFLYING is dedicated to just flying and provides some nice graphs and summary information. You could also add to your flight log by also using magnalox‘s storytelling capability (see example).
About Frank Taylor
Frank Taylor started the Google Earth Blog in July, 2005 shortly after Google Earth was first released. He has worked with 3D computer graphics and VR for many years and was very impressed with this exciting product. Frank completed a 5.5 year circumnavigation of the earth by sailboat in June 2015 which you can read about at Tahina Expedition, and is a licensed pilot, backpacker, diver, and photographer.
there is also fly-arena.com to analyze the flights
and tracklogs on google earth but free flight reserved.