From Bottleneck.org
Flight Simulator X
These tracks show a series of Microsoft Flight Simulator X flights I've been making recently, visiting every country on the way down the West Coast of Africa. This is a tour in progress, so I'll update the map as I go.
Note that the tracks sometimes look a bit awkwards because of where the IFR airways run.
In order to convert the Flight Simulator X flight plan files (.pln) to Google Earth / Google Maps format (.kml) I wrote a bunch of macros in an Excel 2007 spreadsheet - I can't guarantee it will work for you, and I'm quite certain it won't work for earlier versions of Flight Simulator, but you're welcome to make use of the file if you want to!
Download Flight Simulator X .pln to .kml Converter
View FSX Flight Plan tracks in a larger map