I like to keep track of all my flights. A bit cheezy, but it’s cool to know all your flights, where you’ve been, what planes you’ve flown, etc.
There’s this really cool website called “flightmemory”. There, you can add your flights, and it will automatically give you various statistics: most flown airport, most flown route, total number of flights, total distance flown, etc. Check it out:
Click on it, and you’ll see the details of my flight history. I do tend to keep this updated, so, this way, you’ll be able to trace my travels.